—We _____ talk loudly when we see the sign “Be quiet” on the wall.
—Yes, you are right. We should be polite in public.
| A．must | B．mustn’t |
| C．need | D．needn’t |
Ann is a careful girl．She always goes over her exercises to ____ here are no mistakes．
| A．look for | B．make sure | C．find out | D．think about |
Your iPad is quite nice． Where did you buy ______? I want to buy ______, too．
| A．one ; one | B．it ; one | C．it ; it | D．one ; it |
______ difficult questions they are! I can’t answer them．
| A．How | B．How a | C．What | D．What a |
He left in ______ a hurry that he forgot ______ the door．
| A．so; locking | B．so ; to lock | C．such; locking | D．such; to lock |
The old house with a garden ______ 80 years ago．
| A．built | B．build | C．was built | D．is built |