题目内容

The contract says that if any packages______, the insurance company must be notified immediately.

A. have lost
B. should lose
C. should be lost
D. have been lost

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中国是丝绸的故乡。下列传说人物中，首创种桑养蚕之法、抽丝织绢之术，被后世奉为“先蚕圣母”的是()。

A. 黄帝
B. 神农
C. 女娲
D. 螺祖

She claimed that he______able to give more intimate details if he had been properly qualified.

A. have been
B. should have been
C. were
D. should be

You oughtnt to have driven that car with the brakes out of order. You______a serious accident.

A. might have
B. might had
C. might have had
D. have had

【C3】

A. employed
B. created
C. operated
D. controlled