—My pet dog died. —_________.
| A．Not at all. | B．Sorry to hear that. | C．Let me see. | D．Sounds great! |
He was _______ pain, __________ he didn’t cry.
| A．in, but | B．with, and | C．at, or | D．in, and |
He didn’t know __________
| A．what kind of snake it is | B．what kind of snake is it |
| C．what kind of snake it was | D．what kind of snake was it |
Let’s stop _______ a rest. I am so tired.
| A．having | B．to have | C．having | D．had |
We must do everything what we can _______ water and paper.
| A．save | B．saving | C．to save | D．saved |