He told us an interesting story about himself, _______________why he didn’t succeed that time.
We must take measures to protect the endangered wildlife ______ it is too late.
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.