瑞星卡卡安全论坛综合娱乐区Rising茶馆 一道选择题!急啊!!!!!!

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一道选择题!急啊!!!!!!

一道选择题!急啊!!!!!!

Being fit helps you to stay alert and ______your lessons.
A.focused on B.focusing on C.was focused on D.focuses on


到底是B还是D?
最后编辑2007-03-25 21:16:48
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gototop
 

B
gototop
 

None of them is right. Obviously, the proper answer should be "focus on"(a bare infinitive)
The structure is just as follows:
help sb to do A and do B
gototop
 

楼上的说的对吗?是专业教师吗
gototop
 

引用:
【xiaoyonghu的贴子】楼上的说的对吗?是专业教师吗
………………

Well, it is up to you to decide whether I am right.I am also an English learner.
gototop
 

2楼说的对
gototop
 

focus on
gototop
 

可惜啊,答案应该是A,课文中的原话

But,I don't know why.
gototop
 

引用:
【地区性的贴子】可惜啊,答案应该是A,课文中的原话

But,I don''t know why.
………………

如若答案是A,我发誓再不接触英语!问问你的老师吧,课文也有错的.
gototop
 

楼上的对啊
gototop
 
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