作业帮语法填空,
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/05 01:30:29
语法填空,
语法填空,
语法填空,
1 with people with lung or heart problems.患有.病的人
2 protects that从句是对ozone的补充说明,所以此句话可理解为ozone__life from
3 it it 代指后面的to fight against infection
4 infection 这里缺名词
5 the the number of/ a number of 都可以,但是visits是第三人称单数,所以只能用the number of
6 samller the+比较级.the+比较级
7 into flow into
8 to reduce be recommended for sb to do
9 before close all your windows before you go out 在你出去前关好所有的窗
10 the 空格后是if you are driving ,可知car是特指,特指你自己的车