根意语注释, 写出单词的正确形式

小题1:The lifestyle in Korea is quite_______ (相似的) to that in China.

小题2:_______ (归还) books to the library on time is necessary for us all.

小题3:I hear that your new novel will be_______ (翻译) into several foreign languages.

小题4:You should treat him more_______ (礼貌). He is new here and knows nothing.

小题5:There are too many_______ (采访者) in the meeting room You'd better prepare for it.

小题6:_______ (沟通) with others is needed in our daily life. It lets us keep in touch with the outside world.

小题7:It is_______ (有害的) to our stomachs to drink cold water in such weather.

下列做法中，不利于教室内环境改善的是…………………………………( )

A．经常打扫卫生，清除垃圾死角

B．常打开门窗，通风换气

C．讲究个人卫生，不随地吐痰

D．为预防感冒，时时关严门窗