You _______ wash your hands before meals. It is good for your health.
A. may B. can C. must
Next put all the ingredients in a big bowl and ________.
| A．mix up them | B．mix them up | C．mix it up | D．mix up it |
What ________ the weather ________ like tomorrow?
| A．is; going to | B．is; \ | C．is; going to be | D．is; be |
She saw a lot of boys ________ football on the playground when she walked past (经过).
| A．play | B．to play | C．played | D．playing |
The famous movie star was born ________ July, 1998.
| A．in | B．on | C．at | D．for |
The Changjiang River is one of ________ in the world.
| A．the longest river | B．the longest rivers | C．the longer river | D．longest river |