He has worked __________ the maths problem for nearly an hour but he simply can't work it __________.
| A．on；at |
| B．on；out |
| C．at；up |
| D．for；out |
Tom felt that he knew everybody’s business better than they knew it___.
| A．themselves | B．oneself | C．itself | D．himself |
John, you ___ play with the knife, you __ hurt yourself.
| A．won’t; can’t | B．mustn’t; may | C．shouldn’t; must | D．can’t; shouldn’t |
---When shall we meet again?---Make it ___day you like;it’s all the same to me.
| A．one | B．any | C．another | D．some |
I’d get it for you__ I could remember who last borrowed it.
| A．except that | B．if only | C．on condition that | D．considering whether |
Eric nearly always wins the science award.That’s because his projects are ___.
| A．extremely presented well | B．well presented extremely | C．presented well extremely | D．extremely well presented |