题目内容

I____________ to repair the car while you were watching TV. ( am trying, was trying )

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They went to have their dinner after they____________ the assignment. ( finished, had finished )

The bridge____________ by the time you come back from abroad. ( be built, will have been built )

She____________ me that she would be very happy to have us in her home. ( told, tells )

The children have already learnt from chemistry that water____________ up of hydrogen and oxygen. ( be made, is made )