ارجو المساعدة في الحل

[safrootmail]

1- When Ali went to university, he (had studied-studied-has been studying-had been studying) English for ten years.
2- I was tired yesterday morning because I (had been reading-ran-had run-have been running) until late the night before.
3- By the time I went to sleep, I (had been reading-had read-have read-read) a short story.
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4- The manager decided to change the date of the conference even though she (has-had-has had-had had) already sent out 20 invitations.
5- Unfortunately, even though he(trained-has trained-was training- had been training) for six months, Ali didn't win the race.
6- My friend and I (talked-has been talking-had been talking-had talked) on the phone for more than an hour before I put the phone down.
7- Ali wasn't feeling well yesterday. He (had been studying-studied-had studied-was studying) hard all weekend.
8- By the time he finished reading the report, he (drank-has drunk-had been drinking-had drunk) two bottles of water.
9- When his novel came out, he (had written-has been writing-had been writing-wrote) for five years.

11- The bus (broken-had broken-had been broken-was broken) down. That's why Leila was late for school yesterday.
12- He (talked-had talked-was talking-had been talking) on the phone for an hour when the doorbell rang.
13- By the time my mother was aged 30, she (was had-had had-had been having-have had) five children.
14- I (had been swimming-had swum-swam-was swimming) for half an hour before I realised that I was dangerously far away from the beach.
15- Years ago, after Zakaria (was leaving-had been leaving-left-had left) school. he worked on a farm.
16- Professor Williams (finished-had not finished-had not been finishing-had not finishing) his important book about life and science at the time of his death.
17- I'm sorry I didn't answer your call yesterday. I (was studying-had studied-had been studying-studied) with my friends when my family had an emergency and I completely forgot to return your call.
18- Mariam looked so happy when we saw her last week. Perhaps she (had got-got-had been getting-has got) good grades on her exams?
19- By the time Herman Melville was in his mid twenties, he (already travelled-had already travelled-had already been traveling-has already travelled) all over the world.
20- On the day before my grandfather died, he (had been sailing-had sailed-was sailing-sailed) with my father. It had been a special day out for them.