you must teach the girls--- a.how to dance b.what to dance c

you must teach the girls--- a.how to dance b.what to dance c.which to dance 选项是a 因为【dance是不及物动词】，不能有what或which这样的代词做dance的宾语 she was very tired,so she-----very soon on the sofa a.went to bed b.slept c.fell asleep d.asleep 选项是c 她非常累，因此她倒在沙发上很快就【睡着了fell asleep】。