I had to call a taxi because the box was _______ than I’d expected.
A．heavy B．heavier C．the heavier D．the heaviest
--- Do you know who designed the CD-ROM Around the World in Eight Hours?
--- Yes. It ______ by Nancy Jackson.
A．has designed B．designed C．designs D．was designed
--- I feel tired and sleepy.
--- Why not stop ______?
A．relaxing B．to relax C．resting D．to work
--- Betty, could you answer my question?
--- Sorry, Mr. Green. I didn’t hear you. I _______ about something else.
A．was thinking B．am thinking C．think D．thought
--- I won’t have time to go shopping with you this afternoon.
--- But you ________ me yesterday.
A．ordered B．mentioned C．promised D．knew
His father often tells him _______ in that river because it’s dangerous.
A．not to swim B．not swim C．swim D．to swim
