Even though the pure water is ____ gives sea water its main properties, the salinity of sea water affects both its weight and freezing point.
| A．the one | B．which | C．what | D．that |
Cindy shut the door heavily and burst into tears. No one in the office knew she was so angry.
| A．where | B．whether | C．that | D．why |
I'm tired out. I all afternoon and I don't seem to have finished anything.
| A．shopped | B．have shopped |
| C．had shopped | D．have been shopping |
Listening to loud music at rock concerts caused hearing loss in some teenagers.
| A．is | B．are | C．has | D．have |
Tim is in good shape physically he doesn't get much exercise.
| A．if | B．even though | C．unless | D．as long as |
I walked slowly through the market, where people all 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 |