Question

—Why does Thomas speak through every discussion but never listen to the others?

—That's what he ________ do. We used to hate that, but are used to it now.

A．ought to  B．can

C．will  D．might

Answer

C

【解析】答案：C 考查情态动词。ought to最基本的意思是“应该”，既可指有责任或义务，也可指建议或劝告某人“应该”做某事，还可指推测某事或某情况“应该”会发生等；can表能力；will表意愿，还可表示决心、许诺、指示、叮嘱等；might意为“也许”，常表推测。由语境可知，答句意为：那是他愿意做的事情。过去我们讨厌，现在已经习惯了。故C项正确。