It _______ be difficult to get there. Who knows?
A. must B. should C. need D. might
If you want to know the truth, you’d better find out _______.
A. in hand B. in trouble C. in person D. in danger
We should try our best to avoid _______ the same mistakes.
A. make B. to make C. making D. made
This new kind of tree can ______ very good apples.
A. grow B. plant C. produce D. get
. —Tom, how clean your room is!
—It just now.
A. wasn’t cleaned B. is cleaned C. was cleaned D. isn’t cleaned
--- What is your key to success?
--- Never give up and ______.
A. fight on B. get on C. turn on D. take on
