单项选择题

In New England, stone walls are used ______.

A．to keep dangerous beasts out
B．to keep the farmer's cows from wandering away
C．to protect the farmer's fields from thieves
D．to provide comfortable living conditions for the farmer's family

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热门试题

单项选择题

There were five hours left. They ______.

A．needn't hurry
B．mustn't hurry
C．needn't have hurried
D．mustn't have hurried

单项选择题

It is hot outside. I'd rather you ______ the room.

A．not leave
B．don't leave
C．won't leave
D．didn't leave