---He was satisfied with the result, wasn't he?
---No. It was so difficult that he __________have passed it.
A. shouldn't B. mustn't
C. couldn' t D. wouldn't
We should organize useful activities, which will ___________ the relationship of the students.
A. appoint B. employ
C. promote D. commit
Working hard is not a __________ of great success, but it is among the essential requirements.
A. sign B. signal
C. guarantee D. mark
It was only after a family related conversation ______________ I found out she was actually my distant cousin.
A. when B. that
C. which D. who
She did not feel a bit nervous though it was the first time she ___________ in public.
A. spoke B. have spoken
C. had spoken D. were speaking
Father made a promise______________ I did well in the entrance exam, he would take me to Hong Kong in the summer vacation.
A. if that B. if
C. that if D. that
