Look at the sign! It says “No Smoking!” You ________ smoke here. It’s dangerous.
| A．mustn’t | B．ought not to | C．needn’t | D．don’t have to |
Tom’s decided to devote all he could ________ his English before going abroad.
| A．to improving | B．have improved |
| C．to improve | D．improve |
—_________I borrow your lighter for a minute?
—Sure, no problem. Actually, you _________keep it if you want to. I’ve given up smoking.
| A．Can; can | B．Should; may | C．Must; can | D．May; must |
Each of the club members ________ready to help those who were in trouble.
| A．is | B．are | C．was | D．were |
We arrived at the small town too late, almost at midnight. We found there was no food ________ as all the shops were closed.
| A．delicious | B．suitable | C．available | D．pleasant |
—Are you satisfied with what she has done?
— Not at all. It couldn’t be ________.
| A．so bad | B．any worse |
| C．much better | D．the best |