Scientists say it may be five or six years _______ it is possible to test this medicine on human patients.
| A．since | B．after |
| C．before | D．when |
相关试题
There is a great deal of evidence that music activities engage different parts of the brain．
| A．indicate | B．indicating |
| C．to indicate | D．to be indicating |
I don’t mind picking up your things from the store．______ the walk will do me good．
A．Sooner or later |
B．Besides |
| C．Still | D．In time |
We had a big meal in a fine restaurant last Monday and the total cost_______ five hundred
dollars．
| A．came through | B．came in | C．came out with | D．came to |
In the morning you can get up only______ all your equipment buried and you’ve got to dig it out．
| A．to be found | B．found | C．to find | D．finding |
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