Choose a, b or c. He
be home by 10 o'clock, or his mother will be worried.
a) need
b) should c) mustn't
2. Dan
be careful when he drive in winter.
a) need b) ought c) must
3. Pam
wear a uniform when she went to school.
a) need b) had to c) must
4. You
eat the lunch if you don't like it.
a) don't have to b) should c) must
5. They
cook tonight. They can order sushi.
a)
needn't b) have to c) mustn't
6. It's hot outside. You
wear a T-shirt.
a) need
b) should c) had to
Z The bus leaves in 10 minutes. If they want to catch it, they'll
hurry.
a) need b) have to c) must
8. Jack
forget to feed the dog when he get home.
a) needn't b) doesn't have to c) mustn't
2. When will he come? We have been waiting for him for already half an hour.
3. On leaving the hall the students thanked the professor who had delivered the lecture.
4. We have already covered about ten miles when Peter, who has been looking out of the window for the last five or ten minutes, suddenly exclaimed: «Here is the station!»
5. When morning came, the storm had already stopped, but the snow was still falling.
6. Yesterday by eight o'clock he had finished all his homework, and when I came to his place at nine, he was reading.
7. I have been waiting for permission to go abroad for already three weeks, but I have not received the visa yet.
8. Everybody was at the door of the museum, but my friend has not come yet.
9. We were drinking tea when the telephone rang.
19. Johnny noticed that everybody was looking at him, and he felt shy. Light travels more quickly than sound.
На территории Казахстана насчитывается около 6 тысяч видов растений. Растительность широко варьируется по всему Казахстану в 4-х зонах: степной, лесостепной, полупустынной и пустынной. Лесостепи лежат на крайнем севере страны, а озера занимают менее 1 % общей площади. Флора представлена такими видами, как кустарниковая овсяница, мятлик, тимофеевка луговая. Из более высоких растений береза, осина, дуб, липа и ольха. Казахстанские степи покрывают большую часть страны и простираются с запада на восток. Это огромная территория, на которой имеется большое количество травянистых и засухоустойчивых кустарников. Во влажных районах, близких к реке, есть тростники и осоки. Особенность степей заключается в том, что вся красота и цвета сосредоточены в короткий промежуток времени - весной. В середине лета степная трава выгорает и желтеет. Есть много представителей лекарственных растений, таких как зверобой, шиповник и валериана. Цветы степей - это горицвет, клевер, пижма, синеголовник, прострел, тюльпаны, ромашки, ирис.