What can we students do _____ the environment?
Walk _______ the bridge and then turn left ______ the right at the first turning .
--What’s this in the blue box? --________is an orange bottle. _______ orange bottle is mine .
—Good morning, Madam.—Hello, I’d like to buy a book or a magazine on fashion.—_________
Half of his money _________ for food and clothes.
I’d like to find _________ to read on the journey, and _________ will do.