--What did the teacher say just now?
--- The teacher told us _______ our hands before ______ the questions.
| A．to rise; answered | B．rise; answering |
| C．to raise; answering | D．raise; answered |
It’s difficult-------- me to learn English well.
| A．of | B．with | C．for | D．as |
This machine was used -------years ago.
| A．five hundred | B．five hundreds |
| C．five hundreds of | D．five hundred of |
If I have a big house, I will------- a pet dog.
| A．take care of | B．find | C．have | D．keep |
what is your brother able--------?
| A．to do | B．do | C．to doing | D．does |
The boy is old enough to ---------himself.
| A．wear | B．put on | C．dress | D．be in |