When you leave , please turn off the lights energy.
| A．save | B．to save | C．saving | D．saved |
— What can I do for you?
— I’d like to borrow ______ book about ______ Pacific Ocean.
| A．the, 不填 | B．a, the | C．不填, the | D．a, 不填 |
It is the _______in the country to go out and pick flowers on the first day of spring.
| A．use | B．habit | C．custom | D．hobby |
---Poor Steve! I could hardly recognize him just now!
---__________. He has changed so much!
| A．Never mind | B．No problem |
| C．Not at all | D．Me neither |
If it is __________ for you to go out tonight, would you like to go to the cinema with me?
| A．practical | B．necessary | C．convenient | D．grateful |
He made a great __________ to the success of the project.
| A．contribution | B．progress |
| C．distinction | D．conclusion |