---What a heavy haze! The air pollution is terrible now.
---It ________ worse unless we ________ action to protect the environment.
| A．is; will take | B．will be; will take |
| C．will be; take | D．won’t be; take |
Look，the boy can.
| A．skating | B．skate |
| C．skates | D．is skating |
一season in Beijing you like best?
一I like autumn best. It’s cool and sunny.
| A．What; does | B．Which; are |
| C．Which; do | D．What; are |
Who _____________________, David or his brother?
| A．jumps high | B．jump high |
| C．jumps higher | D．jump higher |
Listen! Tom ____________in his room.
| A．is playing the piano | B．plays the piano |
| C．is playing the basketball | D．played violin |
Miss Li often __________ on Sundays, but last Sunday she ______ a farm.
| A．do housework; visit | B．does housework; visited |
| C．does housework; visit | D．do housework; visits |