The best thing you can do to protect your possessions while______is to purchase

游客2023-09-19  32

问题 The best thing you can do to protect your possessions while______is to purchase an insurance.

选项 A、travel
B、traveling
C、to travel
D、traveled

答案 B

解析 while可引导时间状语从句,表示“当……时”,表示主句与从句表示的动作同时发生。从句谓语必须是持续性的或表示状态的动词,从句的完整形式为while you are traveling,因从句主语与主句主语一致,且状语从句的谓语中含有be动词,可以将从句的主语和be动词省略,故此处省略you are,由此确定本题答案为B)。
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