Never Lisa would arrive but she turned up at the last minute.
| A．did we think | B．have we thought |
| C．we thought | D．we have thought |
Professor Williams keeps telling his students that the future to the well- educated.
| A．belongs | B．is belonged | C．is belonging | D．will be belonged |
Trees on the hills can stop the rains from away the soil.
| A．to wash | B．washed | C．washing | D．washes |
What is the best way you can imagine the overuse of water in our daily life.
| A．to reduce | B．reducing | C．reduced | D．reduce |
The boy be very naughty, but he is very lovely.
| A．might | B．can | C．may | D．need |
The good thing about children is that they very easily to the new environments.
| A．adapt | B．appeal | C．attach | D．apply |