高考问答ps如何制作工作证:看看这道选择题！8
来源：百度文库 编辑：高考问答 时间：2024/05/05 20:07:41
it is difficult_____a horse ________
a. to train;jumping b. training;forjumping c. to train;jump d. to train;tojump
a. to train;jumping b. training;forjumping c. to train;jump d. to train;tojump
D
be difficult to do
train sb (how) to do
D. train sb to do sth.
D
A
d