It’s two and a half weeks since the exchange students __________ Taixing.A.arrivedB.
It’s two and a half weeks since the exchange students __________ Taixing.
A.arrived | B.reached | C.have been in | D.have arrived in |
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。