---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
She is often seen ______ the old woman.  
#50014
A
help
B
helping
C
to help
D
help to
You’ve spent too much time _________football.
#50831
A
play
B
playing
C
played
D
to play