If his parents are convinced ______ the fact that his son always focuses his mind _______his study.
| A．of; on | B．of; at | C．by; to | D．on; at |
We have various summer camps for your holidays, You can choose ____ based on your own interests.
| A．either | B．each | C．one | D．it |
—Would you like tea or coffee?
—, thank you. I’ve just had some water.
| A．Either | B．Both | C．Any | D．Neither |
There is in his words. We should have a try.
| A．something | B．anything | C．nothing | D．everything |
—Do you haveready for the graduation ceremony，Ted?
—No，we still have to find a famous speaker.
| A．everything | B．something | C．anything | D．nothing |
Mr Brown has three children, one of whom is a child of six, twins of twelve.
| A．another | B．the other | C．the others | D．other |