5. -----Could I borrow your dictionary?
------Yes, of course you______.
| A．could | B．will | C．can | D．should |
Despite the fact that all three teams ________ different approaches to the problem, they were all immediate successes．
| A．adopted | B．attained | C．adapted | D．attached |
This machine is very easy ______. Anyone can learn to use it in a few minutes.
| A．operating | B．to be operating | C．operated | D．to operate |
Every minute must be made full use _______ in class.
| A．of studying | B．to study | C．to studying | D．of to study |
While these activities might cause laughter ______ respect, in reality they require an enormous amount of strength.
| A．more than | B．rather than | C．other than | D．less than |
You can imagine what great trouble we had ______ the new school.
| A．setting up | B．to set up | C．set up | D．to setting up |