1) Can I wear a T-shirt?
2) Can I eat two apples?
3) Can I ask a question?
<span>Animal
survival is a fascinating and complex subject. as these photos.....
(show), nature usually....... (plays) tricks on us. Two insects.... (are sittin)
on a flower. They both..... (look) like bees, but one of them.... (is not )
a real bee. It...(is imitating) a bee in order to protect itself from
possible predators.
The real bee on the left.... (has) a sting, which it uses as a weapon to
attack its enemies. However, the hover fly on the right.... (is not)
dangerous.
It s completely harmless. This imitation of one species by another
often... (happens) in nature and is called mimicry. Animals.... (copy) the
appearance actions or sounds of another animal and this.... (helps) them
to survive.
</span>
1.He didn't eat yesterday. 2. Did you play the piano yesterday? 3. Have you played the piano today? 4. What have you prepared for today? 5. Look at this bird-house. Mike has made it himself. He made it last Sunday. 6. Where have you put my pen? I cannot find it. 7. Have you seen Mary today? 8. When did you see Mary? — I saw her last week. 9. Has your mother promised to take you to the theatre? 10. Look at my new dress! I have made it myself. 11. He is not at school today, he has fallen ill. — When did he fall ill? — He fell ill yesterday.