She offered a _________ $ 1，000 for the return of her lost necklace passed down from her grandfather.
| A．prize | B．charge |
| C．reward | D．Loss |
That is the only way we can imagine ______ the overuse of water in students’ bathrooms.
| A．reducing | B．to reduce | C．reduced | D． reduce |
What are you doing out of bed ? You’re _______ to be asleep.
| A．supposed | B．known | C． thought | D． considered |
people develop ________ preference for a particular style of learning at ______ early age and these preferences affect learning..
| A．a; an | B．a; 不填 | C．不填； the | D．the; an |
—He is a very hard-working student.
— ______. As far as I know, he often burns the midnight oil.
| A．Youcansaythatagain | B．Absolutelynot |
| C．Heavenknows | D．Noway |
The knowledge that his friends have deserted him is a (n) ______ pill for Mr. Smith to swallow.
| A．extra | B．common | C．bitter | D．effective |