–When did Sam arrive _____ Guangzhou? -- the morning of November 16th .
He _____ to sleep already. I _____ him about it tomorrow.
Sam is my friend, he is a _____ boy now.
Daming hasn’t learnt singing _____ dancing.
---Where’s your father? ---He _____ to work.
---Have you finished your work _____? ---Yes, I have. I’ve always finished it.