单项选择.

单项选择.
【】Tom's school days are busy and he can't get home  _____ 8 pm.A.until B.unless C.since D.when
【】Finally they decided to ______  the invitation.A.receive B.accept C.answer D.have
【】Jenny,do you think math is difficult to learn in high school?
Sure.No subject can be learned well  ___  hard work.A.without B.by C.with D.through
【】I'm ____  my ID card.I can't find it the whole morning.A.looking at B.looking up C.looking after D.looking for.
【】We were _____ to know the death of the young singer.A.glad B.angry C.excited D.surprised
【】What could I get my mother for her birthday?
_____ getting  her a ticket to the concert.A.Why not B.How about C.Let's D.Why don't  you
【】The new company gave away lots of brochures ____ people could get to know it.A.though B.because C.if D.so