I ______ her, but I never could.A．ought to helpB．must helpC．must have helpedD．o

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I ______ her, but I never could.

A．ought to help

B．must help

C．must have helped

D．ought to have helped

答案

解析

略

举一反三

If you are caught driving after drinking, the fine be paid in cash according to the traffic rules.

A．shall

B．will

C．must

D．should

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.Imagine what today’s life would be like if Alexander Bell the telephone more than 130 years ago!

A．didn’t invent	B．wouldn’t invent
C．hadn’t invented	D．wouldn’t have invented

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That"s surprising! It was an easy test and he ______ have passed.

A．must

B．might

C．should

D．would

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It is usually warm in my hometown in March, but it ______ be rather cold sometimes.

A．must

B．can

C．should

D．would

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The digital camera in our shop is of high quality. If there_________ be something wrong with it while it is still under guarantee, we would repair it __________ our expense.

A．would ; on

B．might; from

C．could; with

D．should; at

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