Jack felt nervous when he found the physics problems ____ to work out.
A．easy enough B．too easy
C．too difficult D．difficult enough
Only 16 percent of China’s area ____ covered with forests, so ____of us should protect trees.
A．are; every B．is; each C．is; everyone D．are; each
As a member of the Wild Animals Club, he ____ buys furs.
A．usually B．sometimes C．often D．never
If nobody ____ the traffic rule, the Chinese style of crossing the road ____.
A．will break; disappears B．breaks; disappears
C．breaks; will disappear D．will break; will disappear
Breakfast is ready, you’d better____.
A．not wake him up B．not to wake him up
C．to wake him up D．wake him up
—The dish doesn’t taste as ____ as it used to be.
—Sorry, I have put a little more salt.
A．bad B．good C．terrible D．well
