You ____be careful with fire when you have a picnic in the forest. It’s too dangerous.
| A．will | B．must | C．can | D．may |
Mom and Dad, let me ____ the dinner today.
| A．cook | B．to cook | C．cooking | D．will cook |
––Can you ride a bike?
––No, I ____.
| A．may not | B．mustn’t | C．needn’t | D．can’t |
When I got home last night, my parents ____ for me at the table.
| A．wait | B．waited | C．were waiting | D．have waited |
How are you now? Go to see the doctor ____ you don’t feel well.
| A．and | B．if | C．or | D．so |
––Beijing is a big city, isn’t it?
––Yes. In fact, it’s one of ____ cities in the world.
| A．big | B．bigger | C．biggest | D．the biggest |