问题补充:
Better all the lights are turned off before you leave the classroom.
A. to be sure
B. to make sure
C. be sure
D. make sure
答案:
A. to be sure
B. to make sure
C. be sure
(答案→)D. make sure
解析:Better = Had better, 后接动词原形。
时间:2023-11-05 18:57:03
Better all the lights are turned off before you leave the classroom.
A. to be sure
B. to make sure
C. be sure
D. make sure
A. to be sure
B. to make sure
C. be sure
(答案→)D. make sure
解析:Better = Had better, 后接动词原形。