The workers in the Huashan Mountains have to rubbish to keep the mountains clean.
| A．turn up | B．pick up | C．mix up | D．give up |
The story is about Lei Feng.It's very ______.
| A．boring | B．meaningless |
| C．educational | D．enjoyable |
—Which is______，the sun，the moon or the earth?
—Of course，the moon is.
| A．biggest | B．the biggest |
| C．smallest | D．the smallest |
I bought ______ for my son，but ______ for myself.
| A．nothing；nothing | B．anything；nothing |
| C．something；nothing | D．something；something |
—______ you in America in 1999?
—Yes, I ____________.
| A．Were, were | B．Was, were | C．Were, was | D．Was, was |
—______ does your mother go for a walk？ —Every afternoon.
| A．How long | B．How often | C．How much | D．How many |