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Now,in our country free medical treatment covers sickness of

来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:英语作业 时间:2024/07/02 21:26:26
Now,in our country free medical treatment covers sickness of mind as well as ____sickness.
A.normal B.average C.regular D.ordinary
我选D,不确定,A和D咋区分?
Don't leave the water____while you brush your teeth.
A.run B.running C.being run D.to run
我觉得是B,这里是leave sth.加什么词性?可以加动名词的吗?
When first____to the market,these products enjoyed great success.
A.introducing B.intoduced C.being introduced
我选的B,但不知道这是属于什么结构,是非谓语怎么怎么啦?我没系统的学过,大概讲一下就行了
Now,in our country free medical treatment covers sickness of
ABB第一题是不正式的意思,第二题有个while是现在进行时的标志第三题后面的从句是过去式所以前面也是过去式