It is uncertain side effect the medicine will bring about , though about one thousand patients have taken it.
A. that B. whether C. what D. how
—We all had a lot of fun at the barbecue yesterday. Pity you weren’t there.
— I really should have gone with you, but I ________ on some remaining problems.
A. was workingB. would workC. workedD. had worked
The concert by Lang Lang was so well ______ that all the tickets had been sold out on the first three days last month.
A. received B. recognized C. admitted D. taken
She is a quiet girl at school，but sometimes she _____ be very naughty.
A. should B. would C. will D. can
____ he met with the difficulty did he realize that our help was of great importance
A. It was only whenB. Never untilC. Only beforeD. It was not until
The teacher suggested that the dictionary ______ at once .
A. be referred to be bought B. be referred to being bought
C. referred to being bought D. referred to be bought
