Jack was in low spirits those days and his friends did all they could _____ him up. 
#91803
A
cheer
B
cheering
C
cheered
D
to cheer
推荐题目
It seems you need to apologize quickly ______ a good friend. 
#95570
A
avoiding to lose
B
to avoid losing
C
avoiding losing
D
to avoid to lose
We didn’t expect them ___ for us when we arrived there so late.
#97334
A
to be waiting
B
to have been waiting
C
to have waited
D
to wait