Personally, the job as a teacher _____ be challenging, for I sometimes _____ deal with some smarter but less diligent students.
| A．can; have to | B．may; can | C．has to; may | D．ought to; must |
It’s no long a question now ____men can land on the moon.
| A．that | B．which | C．whether | D．what |
---Jinan Airport,please.I have to get there by 8:00 a.m. ---____, but I’ll do my best.
| A．Out of the question | B．I can’t do that | C．All right | D．I can’t promise |
---Are you satisfied with the result? ---Not a little .It couldn’t be ____.
| A．so good | B．any better | C．so bad | D．any worse |
Now that you have a job ,you should devote yourself to ____you do at work.
| A．whatever | B．no matter what | C．however | D．no matter how |
Is this the reason ____at the meeting for his carelessness in his work?
| A．why he explained | B．what he spoke | C．he explained | D．he spoke |