— I’m sorry I can’t go to your party tonight.— ____________? Haven’t we agreed on it?
_____ I shouted at the top of my voice _____ turn his head.
—How did you find him out? —I ______ his name by chance on the list.
---Is there any present for me ? ---Of course .This necklace __you .
The gravity on the earth is much ______ that on the moon, do you know why?
_____ by a black hole, Li Yanping was so frightened at first, but he calmed down later and tried his best to escape.