Air pollution has become__________ than ever before. We must do something to stop it.
| A．serious | B．more serious |
| C．most serious | D．the most serious |
We don’t sweep the floor for a few_________ .
| A．day | B．week | C．days | D．month |
We often ________ round rice dumplings called yuanxiao.
| A．eat | B．eating | C．eats | D．ate |
My grandpa _________ lanterns for Lantern Festival now.
| A．is making | B．made | C．was making | D．make |
I lost my Chinese book. Please call me_____12345678 if（如果）you see it.
| A．on | B．from | C．in | D．at |
---Is Lingling’s grandmother cooking the meal?
---No, she 。
| A．is | B．isn’t | C．are | D．aren’t |