Judging from his______ expression, this problem must be quite ______.
A. puzzling; puzzling B. puzzled; puzzled
C. puzzling; puzzled D. puzzled; puzzling
Listen! Do you hear someone _____ for help?
A. calling B. call C. to call D. called
--How is your cousin, Kate?
--She broke her leg and ______ medical treatment since.
A. is receiving B. has received
C. received D. has been receiving
--Mom, may I play computer games just for a while?
--______! Dad is writing his paper.
A. Help yourself
B. It's up to you
C. Go ahead
D. Behave yourself
It took ______ building supplies to construct these energy saving houses. It took brains, too.
A. other than B. more than
C. rather than D. less than
Though it is 20 years ______ we last met, I still remember the scene______ we got separated on a snowy day.
A. before; where B. before; which
C. since; when D. since; where
