I'm busy now. I'm sorry I can't help ____ the flowers. 
#98051
A
watering
B
watered
C
waters
D
to water
推荐题目
Did you hear the sound like that of a door _____?
#98298
A
burst
B
to burst in
C
burst in
D
to be burst in
Because of my poor English I’m afraid I can’t make myself ____.
#97091
A
understand
B
to understand
C
understanding
D
understood