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