. You _____ return the book now. You can keep it till next week if you like.
| A．can’t | B．mustn’t | C．needn’t | D．may not |
Laws have been made to prevent people from killing _____animals and birds .
| A．distant | B．wild | C．secure | D．fierce |
Those who suffer from headache will find they get _______from this medicine .
| A．relief | B．safety | C．defense | D．shelter |
---Why don’t we choose that road to save time ?
---The bridge to it __________.
| A．has repaired | B．is repaired | C．is being repaired | D．will be repaired |
The loss has not yet been _______accurately ,but it is believed to be well beyond a hundred million dollars .
| A．calculated | B．considered | C．completed | D．controlled |
Over time the memory of the computer ________so much that it never forgets anything it has been told .
| A．develops | B．is developing | C．developed | D．has developed |