The scientists have made an exhaustive study of the virus _______ many people have been inflected.
| A．to which | B．in which | C．with which | D．for which |
If I buy more than one, will you give me a _________ ?
| A．discount | B．change | C．bargain | D．sale |
He ran the 100 meters in 9.91 seconds, and I have not seen _________ this year.
| A．the best | B．better | C．the most | D．more |
The local government _________ him the prize for his bravery.
| A．rewarded | B．awarded | C．won | D．presented |
They gave a banquet(宴会) _________ the guests from Britain.
| A．in honor of | B．in celebration of | C．in search of | D．in favor of |
Those houses are sold at such a low price _________ people expected.
| A．like | B．that | C．as | D．which |