I talked with a foreigner for a long time yesterday.—Great! It’s a good _______ to practice English.

____ you eat the correct foods _____ be able to keep fit and stay healthy. [ ]

The use of computers has made ______ possible for more people to work at home.

Mo Yan’s winning of 2012 Nobel Prize in Literatureshows the world’s ________ of China’s contemporary literature.

Leaves are found on all kinds of trees, but they differ greatly________size and shape.[ ]