America will never again have as a nation the spirit of adventure as it ______ before the West was settled.
| A．has | B．did | C．was | D．would |
It was some time _______ I realized the fact that I had been cheated by the salesman.
| A．until | B．before | C．unless | D．since |
The computer was used in teaching. As a result, not only _______, but students became more interested in the lessons.
| A．saved was teachers’ energy |
| B．was teachers’ energy saved |
| C．teachers’ energy was saved |
| D．was saved teachers’ energy |
I just expressed my thoughts on it and what I said only applies ______ some of you.
| A．to | B．for | C．with | D．on |
_______ President Xi has pointed out, we chinese should have our chinese dreams.
| A．Which | B．That | C．As | D．It |
The monitor suggested that we ______ for a picnic.
| A．went | B．must go | C．could go | D．go |