_____, I think, and you will settle the problem.
| A．So long as you make your effort |
| B．If you make your effort |
| C．Making great effort |
| D．A bit more effort |
Some researchers believe that there is no doubt___ a cure for AIDS will be found.
| A．which | B．that | C．what | D．whether |
.---Ow! I’ve burnt myself!
---How did you do that?
---I ____a hot pot.
| A．touched | B．kept | C．felt | D．held |
I’d like to arrive 20 minutes early___ I can have time for a cup of tea.
| A．as soon as | B．as a result | C．in case | D．so that |
I don’t mind picking up your things from the store._____, the walk will do me good.
| A．sooner or later | B．still | C．in time | D．besides |
You ____be tired—you’ve only been working for an hour.
| A．must not | B．won’t | C．can’t | D．may not |