— These days I can only sleep for four or five hours at night as I’m too busy with my research work..— If you keep going on like that, you are sure to ______ sooner or later.
What surprised me a lot was that he didn’t know _________the difference between“say and “speak”lay.
— Would you _______ a drink? —No, thanks.I have given up drinking.
Witout the air to hold some of the sun’s heat, the earth at night ________, too cold for us to live.
The patient is supposed to go to the hospital for ___________ checks.
—Do you think we should accept that offer? — Yes, we should, for we ___such bad luck up till now, and time __ out.