—The similarities between social networks are striking.—That ________ come as no surprise，because they are all products of the Internet. 

There's only one day to go. You _____ finish your schoolwork by tomorrow.

–Mom, may I go swimming with my friends in the river? –No, you _________. That’s too dangerous.

—Have you decided where to spend your summer holiday?—Not yet. We ___ go to Hong Kong.

 Linda _____ come to meet me at the station, but I’m not sure.