Little Mary says good night to her parents ________ she goes to bed every day．（ ）
A．ifB．untilC．beforeD．unless
Are you free tonight？
Sorry，but I'm not ．I've got so much homework to do （ ）
A．busyB．comfortable
C．available
Let's get Laurie a gift for his birthday．
OK．Shall we a book online for him （ ）
A．affordB．orderC．offer
the traffic was heavy yesterday，we got to the bus station on time （ ）
A．AlthoughB．UnlessC．Since
Oh，no!I can't find my mobile phone!
Well，where you last put it？（ ）
A．haveB．doC．did
teachers will you miss the most after junior high school，Lisa？
Ms．Lee and Mr．Hunt．（ ）
A．WhoseB．WhichC．What