_____ full preparations, we decided to put off the meeting till next week.
| A．We did not make | B．Having not made |
| C．We had not made | D．Not having made |
The price in different countries will be based________and local economic conditions.
| A．in advance | B．in conclusion | C．on demand | D．at all costs |
It was a long time before the police________what he was really doing.
| A．caught hold of | B．caught up | C．caught on to | D．caught at |
Lan Lan _______her pace of walking home fearing that it was going to rain.
| A．accelerated | B．slowed | C．stopped | D．returned |
People believe that we ______a special ability to learn language and that our brain _____ itself to the language we hear.
| A．are prepared for；adjusts | B．are equipped for；adapts |
| C．are armed by；fits | D．are equipped with；adjusts |
It is immediately obvious that water is to be _______ to the development of life.
| A．compulsory | B．controversial | C．fundamental | D．supreme |