Even though you fail first time, you can still try second time.
| A．a, the | B．the, a | C．不填，a | D．a, 不填 |
A model or an experiment in a science class can help students see things which would ______ remain hidden.
| A．otherwise | B．still | C．thus | D．therefore |
How to balance the government's budget without raising taxes is a ______problem.
| A．firm | B．tough | C．secure | D．stable |
On your way to New York William will keep you ______if you don't want to be lonely.
| A．company | B．companion | C．safety | D．friend |
Don't ______.You will ______ new customs and different ways of thinking.
| A．lose your heart；apply to |
| B．lost heart；apply yourself to |
| C．lose your heart；adapt to |
| D．lose heart；adapt yourself to |
I can not go to the private high school.______，5000 dollars is just too much for my family to spare from living fees.
| A．In other words | B．That is | C．I mean | D．Or rather |