Great changes ______ in the past few years, and a lot of factories ________.
| A．had taken place; have been set up | B．have taken place; have been set up |
| C．took place; have set up | D．were taken place; were set up |
It was really very dangerous. One more step, ______ the baby would have fallen into the well.
| A．or | B．so | C．and | D．but |
It is usually warm in my hometown in March, but it ________be rather cold sometimes.
| A．must | B．can | C．should | D．would |
No one had told Smith about __________ a lecture the following day．
| A．there be | B．there would be |
| C．there was | D．there being |
If the food tastes nice, we will buy some; if ________, ________.
| A．no; no | B．not; not |
| C．not; no | D．no; not |
The man was charged ____________ the crime of betraying his country and sentenced ________ ten years in prison.
| A．for; to | B．with; for |
| C．of; for | D．with; to |