Question

—How long will it be ________ the 30th Olympic Games is held in London?
—It won’t be two years, I think.

A．when

B．that

C．before

D．since

Answer 1

C

考查句型It will be long before... 要过很久才……。句意：要过多久伦敦才举行第三十届奥运会？ 我想不到两年。