问题

How did you know the surprising news—– I happened _______ the event then.
A:to cover
B:to becovering
C:covering
D:to havecovered
B:to becovering
C:covering
D:to havecovered
正确答案是:
同类题型
Mr. Smith is supposed to attend the meeting in place of the manager, who has ______ a bad cold.
It was late. She opened the door ________ because she didn’t want to wake up her grandma.
hand steady economic growth,of course.
Will Mr Wang offer us a hand?— He ____ be glad to. He never refused our request.