Since the recent river pollution in Shanxi Province , people ____ more and more attention to the water quality.
| A．pay | B．are paying | C．have paid | D．have been paying |
-- The terrible accident is under investigation.
-- Actually, quicker action ________ those workers trapped in the mine.
| A．might have saved | B．must have saved |
| C．should have saved | D．could have saved |
A strong earthquake struck Chile's central-south coast on February 22, ________ great damage to buildings
| A．caused | B．to cause | C．causing | D．having caused |
China has made efforts to respond to _______ climate change, and set targets to control greenhouse gas emissions by 2020.
| A．/; / | B．/; the | C．the; / | D．the; the |
-- Sorry, I can't return your book today. I am only half way through it.
-- ________. I have plenty of other books to read.
| A．Take it easy | B．No wonder | C．Take your time | D．No doubt |
Alice was______________the letter from Tom, but it didn't reach her for some reason.
| A．expecting | B．waiting | C．waiting for | D．expected |