---Did you hear that water in Tai Lake smelled terrible?
--- Yes.It ___________ because of people and factories.
A. polluted B. was polluted C.has polluted
We didn’t go home the old man was sent to the hospital.
| A．until | B．when | C．while | D．after |
----your son a computer?
------No.He one this summer vacation.
| A．Has; bought; will buy | B．Did; buy; bought |
| C．Does; buy; bought | D．Does; buy; will buy |
The students are very busy. Some are cleaning the room. are watering the flowers.
| A．Another | B．The other | C．Others | D．Other |
This book must belong to because it has my name on its front page.
| A．I | B．me | C．my | D．mine |
----What do you think of the pop music?
------to the pop music is good way to relax.
| A．Listen | B．Listens |
| C．Listening | D．Listened |