You are under 18 years old, so it is for you to join the Trailwalker.
| A．impossible | B．meaningful |
| C．necessary | D．important |
---Does she have a sister? ---- .
| A．Yes, she doesn’t | B．No, she does |
| C．Yes, she is | D．Yes, she does |
--- Do you enjoy playing badminton? ---Yes, I do.
| A．the | B．a | C．an | D．/ |
He goes to school by bus, but he walks after school.
| A．to home | B．home | C．his home. | D．the home |
How can we fight _____ pollution?
| A．for | B．with | C．against | D．To |
“Dad,_____ you help me with my Maths homework?”said Judy.
| A．must | B．can | C．should | D．may |