I don’t know whether you happen _______,but I’m going to study in the U.S.A.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’m going to study in the U.S.A.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’m going to study in the U.S.A.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’m going to study in the U.S.A.this September.A.to be heard B.to be hearing C.to hear D.to have heard
C

D
听说是在现在之前发生，所以用完成式

D. to have heard
“听说”这个行为用现在完成时

D.happen to do sth碰巧发生什么事
现在说话的时间是现在
但是你听到与否的这个动作是发生在我们说话之前的事情
用现在完成时