30.Nothing is wrong with the radio___________?
31.
| A．isn't it | B．is that | C．is it | D．isn't that |
It ______ to me that I should go to attend a meeting when I was about to go home．
| A．occurred | B．struck | C．happened | D．reminded |
Almost all of his time ______ experiments, he has no time to visit his parents.
| A．devoted to do | B．devoting to doing | C．devoted to doing | D．is devoted to doing |
No government can justly claim authority ______ it is based on the will of the people．
| A．unless | B．after | C．so that | D．while |
Tom ______ with his grandmother for eight years，but now he is living by himself.
| A．lives | B．1ived | C．has lived | D．has been living |
---May I try the shoes on?
---______, but I think they will be too small for you.
| A．As you like | B．It is a pleasure | C．By all means | D．Believe it or not |