rules
You must check the tires before you ride.
You mustn’t ride with a flat tire.
You must read the sign.
You must use your brakes. You must stay on the track. You mustn’t ride too close to other bikes.
You have to wear a helmet, knee and elbow pads,
and cycling shoes.
before the race
You must check your bikes.
You must check the tires before you ride.
You mustn’t ride with a flat tire.
D:No, you can't take pets.
Let's choose.
1.He isn't a tall boy,
.
A.isn't he
B.is he
2.There is a banana on the desk,
.
A.is there
B.isn't there
3.She can't swim,
1. Can we sing songs on the bus?
2.Can we eat in the museum?
3.Can my dog come?
4.Can we take photos in the museum?
A: No, you can't eat.