题目内容
To keep the air clean this hospital forbids all the patients ________ in and around it.
A.smoke | B.smoking | C.to be smoking | D.smoked |
B
解析

练习册系列答案
相关题目
题目内容
To keep the air clean this hospital forbids all the patients ________ in and around it.
A.smoke | B.smoking | C.to be smoking | D.smoked |
B
解析