---- The woman biologist stayed in Africa studying wild animals for 13 years before she returned.
---- Oh, dear! She _______ a lot of difficulties!
A. may go through B. might go through
C. ought to have gone through D. must have gone through
Jim will go on a trip to Sichuan, ________ his parents used to live.
A. where B. which
C. when D. that
______ makes the school proud is ______ more than 90% of the students have been admitted to universities.
A. what; because B. that; because
C. that; what D. what; that
_______ we all know, books are the source of knowledge.
A. What B. That
C. Which D. As
---Excuse me. Is this the right way to the Children’s Palace?
---Sorry, I am not sure. But it______be.
A. will B. might
C. can D. must
People doubt ______ the rising house prices will be under control.
A. that B. whether
C. what D. which
