The little sheep are so lovely. May I have ______as a pet?
Everyone knows that _____ sun is in the center of the solar system（太阳系）
Have you given Mr. Li the message? — Not yet. I will give it to him as soon as he ______. [ ]
______ you sing the English song?— Yes, I can. But only a little.
Our class is planning to hold _____welcome party for _____exchange students from ________Britain.