Dear janet, how are you? i 1) …………….. (write) to you from hawaii. the hotel we 2) ………………. (stay) in is amazing! it’s very hot here and we 3) …………….. (have) a great time. today, we 4) ……………… (be) all at the beach. right now, my sisters 5) ……………… (build) a sandcastle. mum and dad 6) ………………. (play) beach volley for over an hour and my brother 7) ……………… (just / go) diving with his friends. they 8) ……………… (go) diving every day. so far, i 9) ………………… (try) windsurfing. it’s really thrilling! we 10) ………………. (not / do) much sightseeing yet but tomorrow we 11) ………………. (go) on a trip round the island. we’re all looking forward to it. see you soon, luisa

I 1) am writing (write) to you from Hawaii.The hotel we 2) are staying (stay) in is amazing.  

It's very hot here and we 3) are having (have) a great time. Today, we 4) are (be) all at the beach. Right now, my sisters 5) are building (build) a sandcastle. Mum and Dad 6) have been playing (play) beach volley for over an hour and Giavanni, my brother 7) has just gone (just/go) diving with his friends. They 8) go (go) diving every day. So far, 9) try (try) windsurfing. It's really thrilling!  

We 10) have not done (not/do) much sightseeing yet but tomorrow we 11) are going (go) on a trip round the island.

27. I like basketball, but I prefer volleyball. (A)

28. We won the match because we had been practising the week before. (C)

29. Shirley didn't use to speak Russian before she met Ivan. (D)

30. I don't think Adam understood what the coach told us. (C)

31. Before the exam, I had studied everything — except the questions they asked! (A)

32. You looked worried. Are you thinking about what happened last night? (B)

33. When you rang, I was doing my Geography homework. (B)

34. Ivor hasn't been playing cricket for long, but he's already quite good at it. (B)

(...) - граматическая основа.

1. a) (He translates) texts every day. - Present simple. He-подлежащие, translates-сказуемое.

b) (He is translating) a text now. - Present continues. He-подлежащее, is translating-сказуемое.

c) Yesterday (he translated) a text. - Past simple. He-подлежащее, translated-сказуемое.

d) (He was translating) a text yesterday at 3 a.m. - Past continues. He-подлежащее, was translating-сказуемое.

e) (He has (already) translated) the text. - Past perfekt. He-подлежащее, has translated-cказуемое.

2. a) My (friend wrote) an article. - Past simple. Friend-подлежащее , wrote-сказуемое.

b) My (friend has written) the article. - present perfect. Friend-подлежащее, has written - сказуемое.

На остальное не успеваю ответить, простите.