问题

I ___________ to phone her all day, but whenver I phone her, the line is engaged

A:tried
B:had been trying
C:have tried
D:have been trying

正确答案是：

同类题型

I’m very tired these days because ofpreparing for exams.— Why not _____ music It can make you_______.

You must find such long hours very tiring.— ______. I enjoyed it.

She left the city, ________ never to return.

ws that he fought with his coach surprised us,________

She was very hardworking ________he was very lazy.As a result，she passed the examination，but hefailed.[ ]