What a heavy rain！ Will it last long—— ________ . We are getting into the rainy season now.

(2009浙江宁波质检)Since David ________ downloaded a virus into his computer, he can not open the file now．

I wonder if your daughter will go to see the dolphin show, Mr. Wang.—If yours does, so ________ mine.

He left his key in the office. It made him _________in the cold to wait for his wife.

There are some differences between American and British English, but do you know _____the differences came into being