My son wants a pet dog for long, but I have no time to buy _____for him.

I hear Huang Gang made an English speech at the graduation ceremony (典礼) yesterday.—, and .

We need fifteen more people ____ the twenty of us to do the job.[ ]

Is your father a doctor in No.2 Hospital?—No, he ___________ a farmer and now he is a driver.

Most of the students think Huang Bo is one of the __________ movie stars in China now.