I won’t tell the student the answer to the math problem until he ________ on it for more than an hour.
Look, they seem _____ about you.
My brother ______singing ______ dancing while I _____ dance _____sing.
Mr. Chen is a teacher and works very hard. _________ his wife.
The car was stopped by highway man, while ______ through a forest.
______ a terrible storm would take place in Shanghai.