My cousin knows a lot about geography, __ he is only four years old.
A. because B. so C. although
--Hey, Tony, You look so tired today.
---I __ until 12 o' clock last night for the math test.
A. woke up B. stayed up C. grew up
Look! Peter TV happily, but his parents are busy in the kitchen.
A. is watching B. watches C. watched
Parents often ask their kids __ their internet friends because the kids may be in danger.
A. to meet B. not to meet C. meeting
It' s interesting that there are many people speak French in Canada.
A. which B. where C. who
--Excuse me, whose Japanese book is this?
--It be Tom ' s. In our class, only he is studying Japanese.
A. must B. can't C. would