The little boy has learnt to ______ shoelaces(鞋带).
The little boy has learnt to ______ shoelaces(鞋带).
A、check
B、fasten
C、submit
D、serve
【正确答案】:B
【题目解析】:check 检查; fasten 系紧;submit 使服从;serve 服务;句意:这个小男孩已经学会了系鞋带。因此B符合题意。
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