It is summer now in China，_________ it is winter in Australia．

A．before          B．until           C．while          D．since

补全对话，每空一词

—Where 1 you from?

—Can you guess?

—You are from Australia, 2 you?

—Yes, I am. 3 did you guess?

—The 4 you speak. When did you 5 to China?

—I came here last month.

—Really? You came at a 6 time of year, I’m 7 .

—Why do you say that?

— 8 it’s Winter now. The 9 here is very cold．

—Yes. It’s very 10 from Australia at this time of year. It’s summer in Australia now.