-Why does the lake smell terrible?
-Because large quantities of water .
| A．is being polluted | B．have been polluted |
| C．is polluted | D．has been polluted |
The workersthe glasses and marked on each box" This Side UP"
| A． |
carried |
B． |
delivered |
C． |
pressed |
D． |
packed |
——Have you finished reading Jane Eyre?
一N0，I——my homework all day yesterday．
A was doing B would do C had done D do
Listening to loud music at rock concertscaused hearing loss in some teenagers.
| A． | is | B． | are | C． | has | D． | have |
I walked slowly through the market, where peopleall kinds of fruits and vegetables.
I studied the prices carefully and bought what I needed.
| A． | sell | B． | were selling | C． | had sold | D． | have sold |
Tim is in good shape physicallyhe doesn't get much exercise.
| A． | if | B． | even though | C． | unless | D． | as long as |