—If someone sends you a gift,make a of thanking him the next time you meet them.—I will.
There was a _____ rain yesterday evening. It rained ________.
There is _____ river at the foot of the mountain(山). _____ river is dangerous.
--- _________are you late for school? ---Never.
—______ English can you speak?—Only a little.
March is _____ month of the year.