一When shall we restart our business?一Not until we our plan.
My demand is that the information referred to in my report _____ to Mr. Brown without delay.
_____ in writing a lecture speech on Chinese History, he didn’t hear anybody knocking at the door.
There is no light on – they ______ be at home.
______to the sun for too long can hurt your skin.
— How often do you eat out? — ________ ,but usually once a week.