-Did you come to the museum by bike yesterday?
-No. Two inches of snow fell during the night. As a result, several main roads___
| A．piled snow | B．had been closed | C．were blocked | D．covered with snow |
Mary can speak Chinese fluently, _____ impressed me most.
| A．why | B．that | C．where | D．which |
Generally speaking, according to the directions, _____ the drug has no side effect.
| A．when taken | B．when taking | C．when to take | D．when to be taken |
According to the rules of the library, a book can _____ for three weeks, and a DVD for one week.
| A．borrow | B．kept | C．be kept | D．be borrowed |
What _____ pity that you couldn’t go there to receive ______ prize!
| A．a; a | B．the; a | C．a; the | D．the; the |
It’s not necessary to explain the truth________ there are air, water and sunlight , there are living things.
| A．in wherever | B．that wherever | C．which | D．that |