Don’t always believe him. Sometimes _____ he does is quite different from what he says. A what B that C how D who
However, at times this balance in nature is ________ resulting in a number of possibly unforeseen effects.A. troubled B. bothered C mixed D. disturbed
.----Who are those people gathering in front of the building? -----A group __________ itself the youth volunteers.
----- The opening ceremony has already started.------Look! The flag is _______ now.
----Young people shouldn’t always change their jobs. -----_____________. Young people should seek for more challenges.
______that silver is not widely used as a conductor(导体)?