一____it snow tomorrow，what would we do?
一In that case，we'11 have to stay at home．
A．Will B．Must C．Might D．Should
The world is a book，and those who don’t travel read only one page．That’s____I’ll go on a tour this summer．
A．how B．why C．when D．Where
一Excuse me，sir．This is a non-smoking train．
一Oh，sorry．I____ know that．
A．haven’t known B．hadn’t know
C．didn’t know D．don’t know
Sorry to have kept you waiting so long，but it’ll still be some time____Mr．Smith is available．
A．when B．before C．after D．Since
People would like to listen to officials talk____，for no one likes an endless and empty talk．
A．seriously B．fluently
C．frequently D．Plainly
Anhui Province has relaxed the one-child policy，allowing couples to have a second baby if____ parent is an only child．
A．neither B．no C．either D．Any
