--Would you like to visit Kun Ming by yourself this summer vocation? --I’m not sure. I _____go there with my parents because of the terrible thing at the railway station.

—There aren’t any toys in our suitcase．Where have you put them?—Oh, no．That old lady sitting next to us ______ have taken ours by mistake.

---- Is Ann knocking at the door?--- No, it ______ be Ann. She has gone to Beijing. 

I'm going to Europe on vacation together with John if I ________ find the money.(2012·全国Ⅱ)

Now more and more people are_______ the dangers of drinking and driving.