根据下面句子的意思及所给单词的首字母，写出单词的正确形式。每空限填一词。

Doctors w________ us to wash our hands before meals to keep diseases away．

根据下面句子的意思及所给单词的首字母，写出所缺单词，每空限填一词。

The apartment is so expensive that Mr Green can’t a________ it．

根据下面句子的意思及所给单词的首字母，写出所缺单词，每空限填一词。

Do you know the Four Great I________ of Ancient China?

根据下面句子的意思及所给单词的首字母，写出单词的正确形式。每空限填一词。

－Could you give us some a________ on how to learn English will?

－I'd be glad to．

根据下面句子的意思及所给单词的首字母，写出所缺单词，每空限填一词。

In g________, he can get along well with his classmates．