We tried the window but it was still hot in the room.A. to openB. openingC. openD. open

问题补充：

We tried the window, but it was still hot in the room.

A. to open

B. opening

C. open

D. opened

答案：

A. to open

(答案→)B. opening

C. open

D. opened

解析：B 考察非谓语动词。句义：我们试着把窗户打开，但是房间里还是很热，try doing sth试着做某事；try to do sth尽力做某事。根据句义说明B正确。