If the boy had _____ the dog alone it wouldn't have bitten him.
| A．set | B．left | C．had | D．put |
The discovery of how bronze is made was probably accidental, but it
to be an important event.
| A．turned over | B．turned about | C．turned out | D．turned off |
Mr. Smith had taught for many years, and all the students him.
| A．looked up to | B．looked up | C．looked up and down | D．looked to |
Please the invitations as soon as possible.
| A．send up | B．send out | C．send for | D．send in |
If you continue to drive that you will killing yourself.
| A．turn out | B．end up | C．end up in | D．proved |
How did the movie finally ? I couldn’t wait to see the ending.
| A．come out | B．come across | C．come about | D．come in |