The theory was attacked when it was first , but gradually it was accepted.
| A．put up | B．put down | C．put forward | D．put away |
Further reading made me realize that it was hard work and determination as well as her good nature _____ had got her into medical school.
| A．when | B．which | C．how | D．that |
Discovered by the Portuguese in 1506 and _____ in 1810, the island belongs to the Great Britain and has a population of a few hundred.
| A．settling | B．settled | C．to settle | D．having settled |
Perhaps the best sign of _____ computer and internet use pushes up demand for paper comes from the high-tech industry itself.
| A．how | B．what | C．why | D．that |
Until recently, land in large area of Stockholm belonged either to the crown or to the city; there was _____ thing as private ownership of land.
| A．no such a | B．no such | C．not such | D．not any |
Some people disagree with the idea _____ digital textbook will improve education quality while the traditional textbook is out of date.
| A．because | B．which | C．that | D．as |