Complete the dialogues.Put the words into the present perfect or the past simple.

have him\her answer them.
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5 класс

Then and now
Twenty years ago few people realized (realize) that computers were about to become part of our daily lives. This short period of time has seen (see) enormous changes, in business, education and public administration. Jobs which _________________(take) weeks to complete in the past, are now carried out in minutes. Clerks who _______________ (spend) all day copying and checking calculations are now freed from these tedious tasks. In offices, the soft hum and clicking of word processors_________________(replace) the clatter of typewriters. Schoolchildren ____________________ (become) as familiar with hardware and software as their parents _________________ (be) with pencils and exercise books. Computerization of public records __________________ (enable) government departments to analyze the needs of citizens in details. Some of us may wonder, however, whether life ______________ (really/improve) as a result of these changes. Many jobs __________________ (disappear), for example, when intelligent machines ________________ (take) over the work. Employers complain that clerical staff ______________ (become) dependent on calculators and cannot do simple arithmetic.

Ex.1.Rewrite the sentences using the Present Perfect or Past Indefinite.
Examples:I am writing a letter to my cousin.(already;yesterday)
I have already written a letter to my cousin.
I wrote a letter to my cousin yesterday.
1)the waitress is bringing our tea(a few minutes ago;not yet)
2)the bell is ringing (just;some minutes ago)
3)He is going to London in a few days(already;last week)
4)The boys are playing football in the yard now(yesterday;many times)
5)Mother is reading a new novel by Aitmatov(this month;last year)
6)Students are cleaning their classrooms(already;last Saturday)
7)The teacher is explaining a new rule(just;at the pervious lesson)
8)Ann is doing her home work(just;on Friday)
9)They are discussing this problem again(many times; a few days ago)
10)Granny is making a birthday cake(just;yesterday)
11)The birds are flying to the South.(already;at the end of August)
12)the train is coming(just;an hour ago)
13)Who is your friend speaking to?(yesterday;just)
14)We are writing the words of Lesson 7(already;at the last lesson)

(stop)

The town is very different now. It has changed a lot. (change)

a) I did German at school, but I ....................................... most of it now. (forget)

b) The police ....................................... three people, but later they let them go. (arrest)

c) What do you think of my English? Do you think it .......................................? (improve)

d) A: Are you still reading the paper?

B: No, I ....................................... with it. You can have it. (finish)

e) I ....................................... for a job as a tourist guide, but I wasn’t successful. (apply)

f) Where’s my bike? It ....................................... outside the house, but it’s not there now. (be)

g) Look! There’s an ambulance over there. There ....................................... an accident. (be)

Ask general questions.
1/Mother has washed the floor.
2/The girl has danced a lot.
3/The children have started to sing.
4/They have had much fun at the cinema.
5/They have joined us.
Вопрос 2.
Write the negatives.
1/I have watered the flowers in my study.
2/I have cleaned the carpet in my study.
3/I have bought a tasty cake.
4/I have visited your parents.
5/I have washed the floor.
6/She has cooked dinner.
Вопрос 3.
Put the verbs into the Present Perfect or Past Simple.
1/I (be) to Australia twice.I first (go) there in 2002.
2/I (study) Spanish and Italian when I was at school, but I(never/study) French.
3/ My brother (leave) home ten years ago, but he (not/buy) his own place yet.