题目内容
Never before ________ in greater need of technical experts than it is today.
[ ]
A.has Shenyang been
B.Shenyang has been
C.was Shenyang
D.Shenyang was
答案:A
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题目内容
Never before ________ in greater need of technical experts than it is today.
A.has Shenyang been
B.Shenyang has been
C.was Shenyang
D.Shenyang was