The time has come ______ we can make extensive use of nuclear energy．
A．when B．which C．since D．while
Your performance in the driving test didn't reach the required standard—____, you failed．
A．in the end B．after all
C．at the same time D．in other words
—What will you do next Sunday?
—Maybe do some shopping, for I ______go to school on Sunday．
A．mustn't B．shouldn't C．don't have to D．had better not
Asia is important to America because America's future _____ trade with Asia's growing economies．
A．depends on B．takes off C．sets up D．breaks out
--- Peter, you the window quickly, will you?
--- OK! Oh! The window broken.
A．shut; is B．will shut; has been
C．are shutting; was D．have shut; has been
If you make most of the equipment, there will be rise in production.
A．不填；不填 B．the; a C．不填; a D．the;不填
