I _____ through the hard time but for my teacher’s generous and timely help.

A. couldn’t have gone   B. could go

C. mustn’t have gone   D. hadn’t gone

The class teacher was anxious to hear one of his top students _____ because of family move.

A. will leave    B. is leaving

C. was leaving   D. has left

With the exam ______ in ten minutes, they were asked to hand in their mobile phones.

A. taken place          B. taking place

C. having taken place   D. to take place

More than one doctor _____ involved in the rescue that took place after the earthquake.

A. was    B. is     C. were       D. are

Some hard-working students always keep a torch in their dormitories _____ there is a power failure.

A. if     B. unless    C. so that    D. in case

_____ in charge of two classes made Mrs. Li, head of Senior Grade 3, extremely tired.

A. Leaving    B. Left

C. Being left   D. Having left

Almost every teenager will experience a period in their life _____ they aren’t content with their parents.

A. when    B. where    C. that       D. which

Little did the teacher imagine that a student good at maths _____ have failed in the exam.

A. might    B. should    C. need            D. would

— I’ve never seen you so rude!

— I _____ something I shouldn’t have, but I didn’t mean that.

A. have said   B. had said

C. did say      D. was saying

Tom was sorry to learn that his grandfather _____ for half an hour when he got to the hospital.

A. had died       B. had been dead

C. died           D. has been dead