It's very important us to make a plan before a new term begins．（ ）
| A． |
of |
B． |
With |
C． |
By |
D． |
For |
I was playing soccer when the rainstorm ______ yesterday afternoon．（ ）
A．comeB．cameC．comes
Peter， you know the rules． ______ eat in class!
Sorry， I won't do that again．（ ）
A．Didn'tB．Doesn'tC．Don't
Lily and I both like sports， but she plays tennis ______ than me．（ ）
A．goodB．betterC．the best
Look! There are many ______ on the hill．（ ）
A．monkeysB．horseC．cow
Mr． Black thinks it's important for children to help ______ parents to do some chores．（ ）
A．theirB．themC．they