—Listen! Is Mary singing in the next room?—No. It _______ be Mary.She has gone to Shanghai for an important meeting.
Whathonest boy! And he isbest student of all.
Don't eat that meat. It smells ________. A. dirty B. delicious C. bad D badly
The boy is very fat ___________too much food.
There isn't ______ with your bike.
Lucy is ______ of the twins.