—Jack took the 8:30 bus to Guangzhou this morning．
—Really? He _____ 8:20 Express．It is much more comfortable and faster to travel by train．
| A．could have taken | B．would have taken |
| C．need have taken | D．must have taken |
Because of the powerful earthquake, telephone lines, electricity and water supplies were __________ in that area for several days.
| A．cut down |
| B．cut in |
| C．cut up |
| D．cut off |
The good thing about children is that they __________ very easily to the new environment.
| A．adapt |
| B．appeal |
| C．attach |
| D．apply |
In my opinion, to eat more vegetables and play some sports is __________ to our health.
| A．personal |
| B．natural |
| C．beneficial |
| D．informal |
—Will Thursday or Friday __________ you?
—Either will __________
| A．fit； be |
| B．fit； OK |
| C．suit； all right |
| D．suit； do |
Experiments of this kind __________ in both the U. S. and Europe well before the Second World War.
| A．have conducted |
| B．have been conducted |
| C．had conducted |
| D．had been conducted |