Water is very important all living things. We must ______ every drop of water.
| A．for; leave | B．for; keep | C．to; save | D．to; show |
---Can you show me ______to use this kind of camera?
---Sorry， I don’t know，_________.
| A．how； either | B．what； too |
| C．how； too | D．what； either |
Several years later， my parents got new jobs in another city， so we____________move again.
| A．have to | B．had to |
| C．don’t have to | D．must |
---Look! That woman looks like your mother.
---It ________her. My mother___________Japan_____business.
| A．can’t ； has been to； for |
| B．may not； has been to； in |
| C．can't ； has gone to； on |
| D．mustn’t； has gone to； for |
We are going to begin our meeting at 8：00.Please be here_______.Don’t be late.
| A．on time | B．in time |
| C．at a time | D．some time |
— What was your brother like when he was young?
— He used to be quiet. But now he’s very outgoing.
| A．uses | B．used | C． uses to | D．used to |