根据本单元所学知识完成句子。

我们怎么才能说服他加入我们呢？

How can we ________ him ________　________ us?

用适当的副词或介词填空。

My father is leaving ________ Shanghai on business tomorrow．

用适当的副词或介词填空。

Many people are not satisfied ________ their present jobs and are looking forward to better chances．

用适当的副词或介词填空。

Nobody knows what happened ________ him yesterday．

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Even when Thomas was ________ an early age, he loved to make experiments．

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The accident is reported to have occurred ________ the first Sunday in February．

用适当的副词或介词填空。

They had a pleasant chat ________ a cup of tea．

用适当的副词或介词填空。

The plane leaves at 8∶00 a. m., so I have to be at the airport ________ 6∶30 a. m. at the latest．

用适当的副词或介词填空。

When we are crossing the streets, we must watch out ________ the cars．

用适当的副词或介词填空。

Up ________ one fifth of the world’s plants and animals will disappear within 100 years because of deforestation(森林砍伐)．