The principal walked onto the platform and seated himself in a chair, _______ for answering questions.
| A．prepared | B．being prepared | C．prepared | D．preparing |
----Do you play football after work ?
---Yes, ________ ． Playing football is not my favorite sport．
| A．more or less | B．once in a while |
| C．time and again | D．sooner or later |
Studies show that sunshine, fresh air, and plenty of rest often _______ a person’s recovery from sickness．
| A．arrest | B．accelerate | C．betray | D．condemn |
He has little acquaintance _______ music , while he has a wide knowledge ____ painting．
| A．with ; of | B．of ; about | C．with ; about | D．of ; of |
He insisted what he did _______ right and that anyone who broke laws ________．
| A．was ; be punished | B．be ; was punished |
| C．was; was punished | D．be ; be punished |
It’s uncertain _______ side effect the medicine will bring about , although about two thousand patients have taken it ．
| A．that | B．what | C．how | D．whether |