Eric arrived on time, ______ it was the rush hour.
| A．although | B．because |
| C．while | D．unless |
Someone ______ at the door. Can you open it?
| A．knocks | B．knocked |
| C．is knocking | D．was knocking |
Steven, we should ______ the bus at the next stop.
| A．get up | B．get off |
| C．get to | D．get in |
Mom is cooking dinner. It ______ so nice.
| A．smells | B．tastes |
| C．feels | D．sounds |
I ______ follow you. Would you please repeat it?
| A．can’t | B．mustn’t |
| C．needn’t | D．shouldn’t |