I don’t know whether you happen _____,but I am going to studyIn the USA this September.A.To be heard B.to be hearing C.to hear D.to have heard

I don’t know whether you happen _____,but I am going to studyIn the USA this September.A.To be heard B.to be hearing C.to hear D.to have heard
I don’t know whether you happen _____,but I am going to study
In the USA this September.
A.To be heard B.to be hearing C.to hear D.to have heard

I don’t know whether you happen _____,but I am going to studyIn the USA this September.A.To be heard B.to be hearing C.to hear D.to have heard
c happen to do 表示碰巧做 另外,主动,所以c

B

D

c

c