1)Listen! The birds _. а)sings b) are singing c) have sung
2)Dolphins _ by sending sound waves through water.
а)communicate b) communicates c) have communicated
3)Scientists _ a lot about animal communication.
а) are understanding b) understood c) understand
4)I _ a project on animal communication at the moment.
А)am doing b) is doing c) is done
5)I _to a magic show last week.
А)go b) was going c) went
6)Our teacher _our chemistry tests yet.
А) doesn’t mark b) didn’t mark c) hasn’t mark
7)I _to the cinema yesterday.
А) go b) went c) have gone
8)He _at 5 o’clock yesterday.
А) were reading b) was reading c) read
9)How many scouts _the movement this year?
А) have joined b) has joined c) were joined
10)He _  training.
А) has finished b) were finished c) have finished
11)He ___animals and he can talk to them.
А) understands b) understanding c) has understood
12)We_ some research on animal communication at the moment.
А) are doing b) done c) does
13)Our dog always _when there is someone at the door.
А) barks b) bark c) barked
14)I _any articles yet.
А) hasn’t published b) haven’t published c) is publishing
15)We _to teach him to talk at the moment.
А) is trying b) tried c) are trying
16)Sorry I _for ages.
А) hasn’t written b) haven’t wrote c) haven’t written
17)Yesterday we _breakfast.
А) have b) had c) having
18)She_ from two till four yesterday.
А) cooked b) was cooking c) cook
19)We _football with our friends last Sunday.
А) play b) playing c) played
20)We_ to my favourite song at 11 o’clock.
А) were listening b) was listening c) have listened