Many things that were once considered useful and _____, for example, tobacco, is now thought harmful.
| A．beneficial | B．suitable | C．fulfilling | D．accessible |
These days, it seems that we rely on the Internet often, and we couldn’t possibly live _____it.
| A．on | B．without | C．with | D．in |
Mrs Turner told me that she ______ to many cities across China when she was young.
| A．had been | B．has been | C．went | D．would have gone |
Although our former neighborhere for years, we seldom met with each other．
| A．lived | B．has lived | C．was living | D．had lived ． |
The green-hand cookthe soup by putting in too much salt accidentally．
| A．spoiled | B．damaged | C．injured | D．harmed |
The experts present at the conference all insisted that greenhouse gas emissionbe reduced from now on．
| A．must | B．will | C．/ | D．can |