When I was five, I could not ride a bike. -
My sister could ride very well. -
She could help me after school. -
At first, I could ride slowly. -
Now I can ride to the park. -
I can turn left and right. -
I can stop near the gate. -
I cannot ride very fast. -
Can you ride with me? -
We can visit our friends. -
Can I have a biscuit? -
Can we get you anything? -
We could go to an art gallery. -
Could you call me tomorrow? -
Can you close that door? -
We can't find the frog. -
Can I offer you coffee? -
Could it be the beast? -
I think we can do it. -
I can't sing a note. -