My mother teaches _____.

isthe weather in Australia now —Hmm．it’s summer there and a littlewindy．

Entering the reading room,we found herat a desk,with her attention on a book [ ]

Nowadays, many people walk to work ________ Copenhagen Conference calling for living a lowcarbon lifestyle to cope with global warming.[ ]

Generous public funding of basic science would______a good many benefits for the country’s health，wealth and security.