Question

【题目】You must be careful ________ electricity. It's dangerous.

A. to B. at C. with D. for

Answer 1

【答案】C

【解析】

句意：你一定要小心电，它是危险的。考查介词。A. to到；B. at在；C. with和…一种；D. for为了。根据You must be careful ____ electricity. It's dangerous.可知句意为：你一定要小心电，它是危险的。be careful with是固定短语，意思是“小心”，嘱咐别人小心做事，故答案选C。