______has Tom been a doctor ? —–Since two years ago.

will it take us to fly to Hainan and will the trip to Hainan cost us?

How many students are there in your class? — Forty，and ________ of us are girls.

I’m glad to see that the government has_______ the open space _____a public library. —Me, too. We can do some reading there.

Taiwan is_____ the southeast of China.[ ]