As we know，sixteen﹣year﹣olds_____drive a car in our country.（ ）
| A． |
must |
B． |
could |
C． |
mustn't |
D． |
couldn't |
When you go abroad，you'll find that so many products in local shops in China （ ）
A．makeB．have madeC．are made
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