Lily, is this ___ ipad? –No, it’s not mine. I think it’s Lucy’s.

What’s the old man standing there?　-He is _____, a new comer.

How long _______home?—For about three months.

I have been trying my best to study English ________ I want to have a chance to be a volunteer for the Beijing Olympics. [ ]

You look so happy. What happened?—I have just got an “A” in P.E. test.