In the last ten years she _____ like this; she is killing her health.A. works b. has been working C. worked D. is working
He was in the mountain for a year. He felt as if he was ______ from the outside world.
The evening news comes on at seven o’clock and ______ only thirty minutes.
----- Must I turn off the gas after cooking? ----- Of course. You can never be ______ careful with that.
He told me he had been offered a well-paid ____, but he refused it.
He has written a lot of books, but ______ good ones.