Sun Yang, a young Chinese swimming talent, ___________several gold medals before 2012 London Olympics.

―Our company will organize a trip to Hongkong next month. I ______ my mother there.
―I’d rather you ____. After all she has just recovered from her illness and she still feels weak.

— I’m afraid that I may miss her at the airport.
— Don’t worry. She ______ a bunch of flowers at that time.

--Still remember the first time we met in the railway station?
--Of course. You ________ for the train to Shanghai.

He is a financial manager in Wall Street now, but nobody knows he ________ part-time jobs here and there for survival for eight years.

The window ______ by Tom yesterday. Mr. White is repairing it now.

—Do you know where Mary is?
—No, I don’t. I ______ her since last Sunday night.

Great efforts to increase agricultural production must be made if food shortage _____ avoided.

-----Did you have a hard time traveling back home?
-----Yes, it ______ for four days when I arrived in Guiyang and all the roads______ covered with ice.

-----You shouldn’t have gone there alone last night .
-----But I ______. Philip went there together with me .