Don't forget to open the windows during breaks ____ the air fresh in the classroom.

1. Don't forget to open the windows during breaks ____ the air fresh in the classroom.

A. keeping B. tokeep C. keeps D. keep

【考点】

动词不定式;

【答案】

您现在未登录，无法查看试题答案与解析。登录

单选题普通

1. The woman made her son _______ finally after she told him some jokes.

A. laughed B. to laugh C. laugh D. laughing

单选题容易

2. China has made great efforts ____ other countries build high-speed railways.

A. help B. tohelp C. helping D. helped

单选题容易

3. Qiqi hopes ____ medicine in Sichuan University.

A. studies B. studying C. tostudy

单选题容易