填空题

The expert made a very (help)__________ suggestion for the project.

【参考答案】

helpful

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热门试题

填空题

I am (please) _________ to inform you that you have won the first prize.

单项选择题

A．The screen has gone black.
B．The keyboard doesn’t work.
C．The connections are broken.
D．The power supply is off.