Not believing their eyes, the visitors on the spot _______ the flying plane, doing some most difficult and dangerous tricks in the sky.

(2013·吉林长春三校高三调研)Was it through Mary, ________ was working at a high school, ________ you got to know Tom?

The boy,as well as his friends, _______ watching TV last night.

I have kept that photo_______I can see it every day, as it always reminds me of my universitylife in London.[ ]

Shanghai lies _____ the east of China and _____ the northeast of Guangdong. [ ]