–-- Mum, can I go to the zoo with Linda?  ---When your homework  ______, you can.

A. is finished               B. was finished           C. finishes          D. finished        

--Mum, can I wear my jeans to school?

--No, you ________ wear school uniforms. That’s the school rule.

A．can              B．may              C．can’t            D．have to

----Mum, can I do the homework tomorrow?   ------You _______finish it today.

 ---Mum, can I do the homework tomorrow?    ---You _____ finish it today.

A. had better       B. had rather       C. had better not      D. had rather not

— Mum, can I watch TV now?

— No, you . It's too late.

A. can't B. needn't C. won't D. wouldn't