Can we ....?
Can we ride (our) bikes?
Can you...?
Can you make a cake?
Can I ....?
Can I use your pen?
Can I....?
Can I play outside?/Can I play with my friends?
Can I...?
Can I go to the toilet?
Can you help....?
Can you help me with my homework?
Can you ....?
Can you open the window?
Can we....?
Can we play tennis?
Can you...?
Can you turn on the TV?
Can we....?
Can we play tennis?
Can I ....?
Can I watch the TV?