单项选择题

Unless he () to help us, we shall lose the game.

A．promises
B．will promise
C．would promise
D．had promised

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单项选择题

Come on, Harry, why stand there alone We'll go to play ballgames. How about () us

A．taking part in
B．joining
C．joining in
D．attending

单项选择题

The citizens didn't feel safe at all after several families had their house () sat night and a lot of things stolen.

A．broken in
B．broken into
C．to be broken into
D．break in

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