if you have a cold,you shuold be at home and have a rest 分析

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if you have a cold,you shuold be at home and have a rest 分析
If you have a cold,youshould ___at home and have a rest.
A:are B:is C:be D:to be
帮我分析下语法,句型及包含的语法内容!急用!谢谢

很高兴能够在这里回答你的问题,
选C
情态动词后用动词原形,
所以只能选C了
如果你感冒,你应该待在家休息
再问：我知道选C，就是不知道怎么分析，这个句子就只是考察了情态动词的用法吗？不涉及什么非真实条件句那些吗？
再答：这道题的考点就是情态动词后要用动词原形 is are 它们的原形就是be 并不涉及其它考点。

if you have a cold,you shuold be at home and have a rest 分析 .You look tired now.You stay at home and have a rest. You'd better stay at home and have a good rest,______ ______ rest ,at,home,and,stay,a,have怎样排序 home.have.good.stay.and.a.rest.at.连词成句啊! if you -------------(have a cold),you should se a doctor at if you tired you should (s___)to have a rest If you are t ,you can have a rest . I have a cold and feel tired.If you (),you can lie down and Stay home and have a good rest What should you do if you have a bad cold? how do you feel if you have a cold?