The twin___________work hard at lessons.We must help them.A / B don't C aren't D is like选择

问题描述:

The twin___________work hard at lessons.We must help them.A / B don't C aren't D is like
选择

B 双胞胎上课不认真,我们必须帮他们

B don't

  选B.
  句中已经有谓语动词work了,故CD错误,只能选助动词don't.
  意思是:这对双胞胎不在功课上下功夫,我们必须帮助他们.
  请采纳!