I don’t know whether you happen ____ it, 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
The approach ______ the problem is contrary ______ our expectation.
What ______ me was that there was a ______ look on her face due to the ______ problem.
Our country ______ great changes in the last 30 years and it is no longer it used to be.
Every student as well as teachers who ______ to visit the museum ______ asked to be at the school gate on time.
______ about the missing boy’s safety, the police stepped up their search.