下句中有一个错误，请改正

The watch that mother bought it for me works very well.

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下句中有一个错误，请改正

Can you think of anyone who's house was here?

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下句中有一个错误，请改正

This is all which I can do for you.

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下句中有一个错误，请改正

The students are playing football on the playground are of Class Two.

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下句中有一个错误，请改正

The man came yesterday is our English teacher.

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下句中有一个错误，请改正

April 15, 1976 is the day when we'll never forget.

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下句中有一个错误，请改正

He left me the book, that is very useful for me.

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下句中有一个错误，请改正

I know the reason that she looks so worried.

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下句中有一个错误，请改正

The days when we spent together cannot be easily forgotten.

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短文改错

此题要求改正所给短文中的错误。对标有题号的每一行做出判断：如无错误，在该行右边横线上画一个勾(√)；如有错误(每行只有一个错误)，则按下列情况改正：

该行多一个词：把多余的词用斜线(＼)划掉，在该行右边横线上写出该词，并也用斜线划掉。

该行缺一个词：在缺词处加一个漏字符号(∧)，在该行右边横线上写出该加的词。

该行错一个词：在错的词下画一横线，在该行右边横线上写出改正后的词。

注意：原行没有错的不要改。

It is easier to go downhill than to climb uphill; so it is easier to fall

into bad habits than into good ones. Bad habits do not come suddenly.

they learn to cheat. At last, they become distrusted by everybody.

How necessary it is that we get rid of the bad habits in the beginning.