The students couldn't help ______ when they heard the joke.
A. to laugh B. laugh C. laughing
I will ________you________your science.
A．help；on B．help；with C．help；about
You ________ need to go to school today.
A．do B．does C．did
I am ill. I ________stay at home.
A．must B．have to C．need
I hope you will ________soon.
A．get good B．get well C．get nice
She________ many trousers in the clothes shop.
A．looks B．watches C．sees