问题

Suddenly everyone stopped talkingIt became clear that something unexpected _____But, for a while, I didn’t know what it was
A:has happened
B:is happening
C:happened
D:had happened
B:is happening
C:happened
D:had happened
正确答案是:
同类题型
I don’t know whether he has finished the novel, but he ________ it this morning
Is the boy in white clothes your friend, Kangkang —No. ____ in black clothes is.
My plane at 8:30 am, so I _______ home at 8:00 tomorrow morning
He’s never been to England, ________ he— ________. He even had photos taken in front of the Big Ben.