After we came into the house, we found him lying on the ground with his mouth _______ and eyes ________.

How does your brother like the song Two Butterflies?—Great! He _____ such a beautiful song before.

________ all the lessons in Book II, Unit 5 is the most interesting.[ ]

Shall we take a taxi? — No, we . It’s not far from here.

It can’t be a（n） _______ that four jewelry stores were robbed in one night．