I think physics is very difficult to learn. Do you ________ me?

 —Oh, a nice photo! Is this your uncle’s child?—Yes, it’s my      .

– Do you like to go on the holiday in Hainan with me?— I’d love to, but I cannot ___ the time. 

—I am sorry I _______ my exercise book at home.— Don’t forget _______ it to school tomorrow.

—Don’t _____ so often. It’s bad for your health.—I have to. But I know I should have enough sleep.