Please remember to remind them that the products inside are ________ and must be handled with great care.
| A．smooth | B．heavy | C．flexible | D．fragile |
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 |
So far nobody has claimed the money in the library.
| A．discovered | B．to be discovered |
| C．discovering | D．having discovered |