—How many birds can you see in the trees?—I can see _____ birds in them.
It has been many years ________ we met at the train station in 2008.
--How can young people realize their dreams? --No matter what difficulties they meet, they can’t ________.
Basketball ________ by a Canadian doctor ________ James Naismith.
People shouldn’t ________ take photos while seeing famous pictures in the art gallery.
We all think it’s dangerous for _________ to drive.