Ten minutes of the third.
Ten minutes to seven.
Half past six.
Fifteen minutes of the two.
Twenty minutes of the nine.
2.I got up before 7 o'clock. I didn't get up before 7 o'clock.
3.I had a shower .
I didn't have a shower.
4.I bought a magazine.
I didn't buy a magazine.
5.I ate meat.
I didn't eat meat.
6.I went to bed before 10:30.
I didn't go to bed before 10:30.
№14
1) You mustn't make so much noise. Mother is tired. I know she is trying to sleep.
2) We must try and get up earlier tomorrow. Otherwise we will be late again.
3) Tell your uncle that he mustn't do your homework.
4) Please remember that it is a secret. You mustn't tell anyone.
5) I mustn't eat too much. I am on a diet.
6) I know I must lead a regular life, but I simply can't.
7) I mustn't wear this hat again. I look ridiculous in it.
8) I mustn't invite so many people to my party again. There were two many of them.
9) You mustn't tell a lie again, Freddie.
10) You mustn't play here. A street is not a playground.
<span>То be-was-were-been;
to have-had-had;
to mean-</span>meant-meant;
to learn-learned/learned-learned/learnt;
to become-became-become;
to bring-brought-brought;
to know-knew-known;
to think-thought-thought;
to buy-bought-bought;
to pay-paid-paid;
to take-took-taken;
to do-did-done;
to begin-began-begun;
to give-gave-given;
to make-made-made;
to keep-kept-kept;
to get-got-got;
to read-read-read;
to show-showed-<span>shown, showed.
</span>
1. Many people had an opportunity to use computers.
2.There was no doubt that computers solve problems very quickly.
3.Instructions directed the operation of a computer.
4.Computers brought with them both economic and social changes. 5.Computing embraced not only arithmetics, but also computer literacy.
6.It was well known that computers prepared laboratory tests.
7.Those persons were computer literate and thought of buying a new
computer. 8.They received a subscription magazine once a
month. 9. My mother was ill and visited her doctor every other day.
<span>10. Experts knew much about how to prepare programs.</span>