Our teacher often tell us ____ in the river. It’s dangerous.
| A．not swim | B．not to swim |
| C．don’t swim | D．not swimming. |
The meat smells _________. You’d better throw it away.
| A．bad | B．badly | C．good | D．well |
Although the teacher had told Bob the history of telephone, Bob didn’t know when ____.
| A．it was invent | B．was it invented | C．it was invented | D．it invented |
What happened _______ Jim？ He looks really upset.
| A．to | B．at | C．on | D．with |
Did you know the Earth is home to __________ animals?
| A．million | B．millions | C．millions of | D．million of |
Can you take a __________ for Jenny, please?
| A．note | B．information | C．news | D．message |