Plans have been proposed ______ the largest dam in the world to be built along the Congo river.
__________ fired, your health care and other benefits will not be immediately cut off.
—How’s your tour around the North Lake? Is it beautiful?—It ________ be, but it is now heavily polluted.
John promised his doctor he _____ not smoke and he has never smoked ever since.
According to the air traffic rules, you ___ switch off your mobile phone before boarding.
When I was young, I was told that I ______ play with matches