He is rather difficult to make friends with, but his friendship, ________, is more true than any other.
A. after gaining B. while gaining
C. once to gain D. once gained
Many people can’t learn any lessons from the mistakes they’ve made __________ they get hurt somehow.
A. whether B. unless C. if D. as
---- They like going to sleep early, don’t they?
---- Yes. They are accustomed ___________ very late.
A. to stay up B. to not stay up
C. to staying up D. to not staying up
— Believe it or not, my sister and I are twins.
— Oh, you must have had the case _________ you were taken for your sister.
A. which B. whose C. where D. when
Last year the number of students who graduated with a driving license reached 200,000, a(n) ________ of 40,000 per year.
A. amount of B. quantity
C. average D. number
____today, he would get there by Friday.
A. Would he leave B. Was he leaving
C. Were he to leave D. If he leave
