单项选择题

Before the first non-stop flight made in 1949, it ______necessary for all planes to land for refueling.

A. would be
B. has been
C. had been
D. would have been
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单项选择题
Jimmy couldn’t' t eat hard food for at least half a week as he had his wisdom tooth ______ today.
A. pulled
B. fragmented
C. extracted
D. picked
单项选择题
Having no money but ______ to know, he simply said he would go without dinner.
A. not to want anyone
B. not wanting anyone
C. wanted no one
D. to want no one
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