问题
选择题
Bob often his homework after dinner.
A．do
B．does
C．doing
D．to do
答案
答案：B
题目分析：句意：Bob经常在饭后做作业。分析本句中often经常体现时态为一般现在时，主语是单数第三人称，因此谓语动词用单数。故选B
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Bob often his homework after dinner.
A．do
B．does
C．doing
D．to do
答案：B
题目分析：句意：Bob经常在饭后做作业。分析本句中often经常体现时态为一般现在时，主语是单数第三人称，因此谓语动词用单数。故选B