液膜分离内相功用:英语作业

来源:百度文库 编辑:查人人中国名人网 时间:2024/05/02 02:52:06
1.The student has a probelem____the new environment.
A.get used to B.getting used to
C.got used to
请解释一下

B

have a problem doing sth.

B

a

c

B
一句话有了HAS这个动词,不能有两个动词
所以Get改成Getting

B