why don’t you now ?
A: leave
B: not leaving
C: not leave
D: don’t leave
A: leave
B: not leaving
C: not leave
D: don’t leave
举一反三
- ________ the building quickly, but ________ use the lift. A: Leave; don’t B: Leaving; don't C: Leave; not D: Leaving; not
- You ______ a tip if you're not satisfied with the service. A: mustn't leave B: must leave C: can leave D: don't have to leave
- If you don't leave on time, ______.
- You'd better ________things ________if you don't know how to deal with them. A: to leave ... alone B: leave ... lonely C: leave ... alone D: to leave ... lonely
- — May we leave the classroom now — No, you ______. You ______ to leave until the bell rings. A: needn’t ; are allowed B: don’t have to; are supposed C: mustn’t ; aren’t allowed D: can’t ; aren’t supposed