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We ________ here on time but we were caught in a traffic jam.

A．must have arrived B．could have arrived

C．need have arrived D．should have arrived

If you ________ home without a word, your parents wouldn't be so worried now.

A．didn't leave B．couldn't have left

C．hadn't left D．shouldn't leave

If I ________ your advice then, I think that the crops could be growing better.

A．took B．would have taken

C．had taken D．have taken

—How was your trip to Yancheng last week?

—Wonderful! I only felt sorry that I ________ the nature reserve of red?crowned cranes, but the weather was awful.

A．could visit B．could have visited

C．might visit D．might have visited

If you want somebody to go window shopping with you, why not try calling Marie? —she ________ be home by now.

A．shall B．should

C．will D．would

People love the convenience of bottled water, but if they ________ the problem it causes, they ________ try carrying water in a reusable steel container instead of plastic.

A．realized; will B．had realized; will

C．realized; would D．have realized; would

—Show me your permit, please.

—Oh, it's not in my pocket. It ________.

A．must have fallen out B．might fall out

C．could fall out D．should have fallen out

According to the rules and regulations, all payments ________ be made in cash in the shopping center.

A．shall B．can

C．must D．should

Martin hasn't got in touch with me for ages. He ________ my new cell phone number.

A．can't get B．mustn't get

C．can't have got D．shouldn't have got

—How dangerous it was!

—Yes, but for the passer?by's quick action, the girl ________.

A．was drowned B．could have been drowned

C．had drowned D．should be drowned