未雨绸缪,防患于未然。? Prevention|Repair the window before it rains.|Prevention first.|Repair the window after it rains.
举一反三
- _______ is of no concern to us. A: It rains or not B: If it rains or not C: Whether it rains or not D: rain or not
- I'm really tired of the weather here. Not a day passes (). A: but that it rains B: it rains C: when it rains D: except it rains
- The washing machine ______ before it can be used. A: must repair B: needs repairing C: should be in repair D: require be repaired
- Remember to close the window and the door_______ you leave the classroom. A: before B: after C: as soon as D: until
- The electric shaver needs (repair) __________ before it can be used.