Peter's jacket looked just the same as Jack's, but it cost （）his.

单项选择题Children need friends （）their own age to play with.

A. of
B. for
C. in
D. at

单项选择题My parents have promised to come to see me before I （）for Africa.

A. have lef
tB. leave
C. left
D. will leave

单项选择题It just isn't fair （）I was working as a waiter last month; my friends were lying on the beach.

A. whenever
B. though
C. for
D. while

单项选择题The traffic is heavy this day, I （）arrive a bit late, so could you save me a place

A. can
B. must
C. need
D. might

单项选择题（） is the power of TV that it can make a person suddenly famous.

A. Such
B. This
C. That
D. So