Question

1.没有你的帮助，我不可能通过考试。(without)

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2.这项工程很快就会完成。(finish)

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3.请与我们保持联系。(keep in touch)

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4.你讲得太快了，我没听懂。(so... that...)

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5.如果你想知道这个单词的意思，查一下字典吧。(look it up)

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Answer

1.Without your help, I couldn't have passed the exam.

2.This project will be finished soon.

3.Please keep in touch with us.

4.You spoke so fast that I couldn't understand you.

5.If you want to know the meaning of this word, look it up in the dictionary.

【解析】

1.pass the exam通过考试。Without your help没有你的帮助，此处是虚拟语气，对过去的假设，故主句用could have done。故此处为Without your help, I couldn't have passed the exam.

2.soon“很快”，用于一般将来时，结合句意表示工程将被完成，故用will be finished。故此处为This project will be finished soon.

3.keep in touch with sb“和某人保持联系”，故此处为Please keep in touch with us.

4.so fast that……“如此快……以至于……”，I couldn’t understand you我没有听懂。故此处为You spoke so fast that I couldn't understand you.

5.want to do sth想要做某事，in the dictionary“在词典上”，the meaning of“……的意思.，”故此处为If you want to know the meaning of this word, look it up in the dictionary.