1.用连词填空
He asked 【how many/what】factories we had built in our village
2.用情态动词填空
-【 can 】your brother speak English very well ,too?
-yes,【I——he】【can】.【是前一句话的回答,这个人称有问题吧?】
-【Can】you play tennis?
-yes,I can.
3.PS：
could 和might有什么区别
could：是can的过去式.意思是【能够；可能（可能性较大）.】可以用来表示能力,也可以用于表示【可能性的推测或判断】,主要用于否定句、疑问句中.例如
They said they could finish that job all by themselves.【表示能力】.
They couldn't have completed that building,could they?【可能性的推测或判断】
另外,could也可以用来代替can,用于征求对方意见或许可、请求等的疑问句中,语气更加客气、委婉.你给的这一句就是——
Excuse me,sir.【Could】I ask you a question ,please?
might：是may的过去式,意思是【也许,可能】,主要用于【可能性的推测或判断】,但是可能性很小.例如：
Might he come to help us?
They might have gone home before 9 o'clock.
祝你开心如意!