If you have any problems, you can ask Dr. Know-all _________ help.
A. at B. on C. for D. with
—Great changes have taken place _____ we enter E-Times.
—Yeah. I agree with you.
A. since B. as soon as C. when D. before
Look at the math book. Do you know ______ it might be?
A. where B. who C. what D. whose
How I wish I could sleep longer! However, I had to get there before the plane_________.
A. ran off B. went off
C. took off D. set off
—The box is too heavy to carry. What’s in it? —Oh, it is ________ books
A. filled with B. covered with
C. used for D. asked for
The house price _______ so rapidly in many cities last year that many people couldn’t afford to buy the houses.
A. rose B. raised C. dropped D. Controlled
