As a teacher, I always can't help ...-环球青藤（原环球网校）

单选题

As a teacher, I always can't help ( )about how to help my students to improve their grades.

thinking

to think

thought

think

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正确答案:A

can＇t help doing sth. 意为“忍不住做某事”；can＇t help（to） do sth.意为“不能帮助做某事”。根据句意可知，选A。