They will give us the money _______ we pay it back within half a year.
| A．on no condition |
| B．on condition |
| C．under the condition |
| D．on condition that |
Come and see me whenever ____.
| A．you are convenient |
| B．you will be convenient |
| C．it is convenient for you |
| D．it will be convenient for you |
As we can see, the prices of vegetables _____ according to the season.
| A．vary | B．fall | C．rise | D．reject |
I felt very tired when I got home. and I _______ straight to bed.
| A．go | B．went |
| C．had gone | D．have gone |
Once the new rules are made，what matters much next is how they will be________to all the members of the club.
| A．devoted | B．referred |
| C．applied | D．directed |
Nowadays people are more concerned about the environment _______ they live.
| A．what | B．which |
| C．when | D．where |