---I am sorry to have kept you ___________.---It doesn't matter. I've just come.
#49688
A
wait
B
waited
C
waiting
D
to wait
推荐题目
My mother’s birthday is coming, I don’t know _________for her.
#48742
A
what to buy
B
how to wear
C
when to go
D
why to do
I find it impossible for me _______ my old friends. This often makes me _____ sad.
#48745
A
meet; to feel
B
to meet; feel
C
meeting; feeling
D
met; felt
 Mario used to _____________ in the morning.      
#48943
A
practiceswimming
B
practicingswimming
C
practiceswim
D
practicesswimming