I’m sorry that I can’t help _____ trees because I am busy with the homework.
#97009
A
to plant
B
planting
C
planted
D
plants
推荐题目
_____________to somebody,a British person often shakes hands with the stranger.
#97496
A
Introducing
B
To introduce
C
To be int.roduced
D
On being introduced。
The digital dictionary I had        the other day cost me a lot.
#95729
A
repaired
B
repairing
C
to repair
D
to be repaired
—What do you think made Mary so upset? —_______ her new bike. 
#98620
A
As she lost
B
Lost
C
Losing
D
Because of losing