It’stwoandahalfweekssincetheexch

发布时间:2020-07-11 16:11:07

It’s two and a half weeks since the exchange students __________ Taixing













A.arrived












B.reached











C.have been in











D.have arrived in

网友回答

B解析It’s+段时间+ since引导的从句表示自从以来已经多久了。Since引导的句子要用过去式,把C,D排除。
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