His arm is all right．He ________ go and see the doctor．

[　　]

A．has not to

B．don't have to

C．haven't to

D．doesn't have to

答案：D
解析：

選D。have to意為：“得，必須”。此句的主語(yǔ)是第三人稱(chēng)單數(shù)，故選D。


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