My pen-friend，Peter，wrote to me，expressing the hope _____ he would come to Beijing to see the 2008 Olympic Games

Look, the little girl is dancing as if she ______ a little bird

Miss Chang plans to drop by her uncle when she reaches Beijing.

Dad, I don’t think we can go into the building. Look at the sign — “_______”.— Oh, I didn’t notice it.

You had better ____ jeans. If you don’t, we won’t let you in.