Believe it or not, crying is a way you can imagine ______ pressure.
A. relieving B. to relieve
C. relieved D. relieve
__________ the students who have taken part in the sports game is unknown.
A. A great number of B. A great deal of
C. A large number of D. The number of
_______, the more exercise you do, the richer your knowledge will be.
A. It is known to all B. Which is known to all
C. As we all know D. As is known to all that
His mother happened _______ when his program was shown on Channel Young.
A. watching TV B. to watch TV
C. to be watching TV D. being watching TV
By the time he was ten, Edison _________ experiments in chemistry.
A. had already done B. already had done
C. was already doing D. already did
The businessperson wanted to sell his goods fast; ______, he chose his partner with great care.
A. therefore B. otherwise
C. for D. however
