Would you please make up a topic ______ discussing at tomorrow’s conference?
— It’s getting dark, but Mr. Chen is till at his office. — No surprise. Who else can _______ he does.
Parents should pay attention to the cases _______ their children have difficulty adapting to new surroundings.
You _______ call him if you want to, but you _______, for he’ll surely come here soon.
Tropical Storm Fitow on July 7, 2013 has caused serious _______ to Wenzhou’s economy.
Of the two brothers, Bill is ______ younger one, and he is a quiet boy, ______ that most adults like very much.