题目内容
【题目】In general, if you have questions about the trail(痕迹) you’re leaving online, don’t be afraid ___________ ask a trusted adult.
A. of B. to C. for D. up
【答案】B
【解析】be afraid to 意为"害怕……",to是动词不定式符号,后面接动词原形。
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题目内容
【题目】In general, if you have questions about the trail(痕迹) you’re leaving online, don’t be afraid ___________ ask a trusted adult.
A. of B. to C. for D. up
【答案】B
【解析】be afraid to 意为"害怕……",to是动词不定式符号,后面接动词原形。