--Jack,you are weak in English.You must work har--Jack,you are weak in English.You must work hard.--I see.I believe I will （ ） learn English well soon.A.can B.could C.be able to D.have to
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--Jack,youareweakinEnglish.Youmustworkhar--Jack,youareweakinEnglish.Youmustworkhard.--Isee.IbelieveI
--Jack,you are weak in English.You must work har--Jack,you are weak in English.You must work hard.--I see.I believe I will （ ） learn English well soon.A.can B.could C.be able to D.have to
--Jack,you are weak in English.You must work har
--Jack,you are weak in English.You must work hard.--I see.I believe I will （ ） learn English well soon.A.can B.could C.be able to D.have to
--Jack,you are weak in English.You must work har--Jack,you are weak in English.You must work hard.--I see.I believe I will （ ） learn English well soon.A.can B.could C.be able to D.have to
C
be able to 能,可以
C
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