Willyoubehome

Willyoubehome________toseethechildrenbeforetheygotobed?A.on timeB.in timeC.at a timeD.at one time

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B解析这题考查考查词组：At a time一次，in time及时，迟早 At one time曾经，on time准时，句意是：你会及时到家在孩子睡觉前看看他们吗？选B。