Seeing my mother is busy, I can’t help ________ housework．

I was busy with my work, so I can’t help ________ housework．

A．do　　　　B．be doing

C．to doing　　D．doing

－Have you ________ to Jack for many years?

－No, just one year．

－Have you ________ to Jack?

－Not yet．

A．been marrying　　B．married

C．got married　　　D．been married

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How about two of us ________(take)a walk down the garden．

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Go on ________(do)the other exercise after you have finished this one．

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The computer centre, ________(open)last year, is very popular among the students in this school．

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Paul doesn’t have to be made ________(learn)．He always works hard．

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Little Tom should love ________(take)to the theatre this evening．

在下面句子的空格中填入适当的连词：

We played outside till sunset, ________ it began to rain．

在下面句子的空格中填入适当的连词：

They decided to go back home ________ their money ran out．

在下面句子的空格中填入适当的连词：

The thieves ran away ________ they caught sight of the police．