It’s said that this kind of plant only gives off this strange perfume on ________ conditions which the scientists are trying to figure out now.
| A．outstanding | B．certain |
C．obvious | D．ordinary |
---- I’m taking a taxi to the airport to pick up my daughter.
---- ______________? I can give you a lift.
| A．Why not | B．What for | C．Why bother | D．How come |
New digital mobile phones definitely produce less radiation, but that doesn’t ______ mean that they should be used without caution.
| A．relatively | B．obviously | C．necessarily | D．generally |
---- Could I take a few days’ leave, sir?
----- I’m afraid you can’t ___________ the work is being done.
| A．until | B．before | C．after | D．as |
The money will be paid to everyone ___________ whether they have children or not.
| A．in terms of | B．regardless of | C．in addition to | D．far from |
If we keep wasting so much energy, ________ are that our oil wells will dry up and the environment will be destroyed.
| A．problems | B．difficulties | C．questions | D．Chances |