Past simple or present perfect? 1) we already the zoological society of london. (join) 2) our class to the zoo yesterday. (go) 3) last year my family to the black sea. (go) 4) she just from italy. (return) she there last year. 5) yesterday they a party. (have) 6) last week we a composition. (write) 7) i to boston yet. (not be) 8) the pupils the new rule last monday. (not understand) 9) kate and jess a nice cat recently. 10) two days ago my friend and i an ufo. (see)

Have joined
went
went
has returned, returned
had
wrote
have not been
did not understand
эм.. тут РS должно быть, но глагола нет
saw

1)      We have already joined the Zoological Society of London. 
2)      Our class went to the Zoo yesterday. 
3)      Last year my family went to the Black Sea. 
4)      She has just returned from Italy. She was there last year.
5)      Yesterday they had a party. 
6)      Last week we wrote a composition. 
7)      I haven't been to Boston yet. 
8)      The pupils didn't understand the new rule last Monday.
9)      Kate and Jess have bought a nice cat recently.
10)   Two days ago my friend and I saw an UFO.