Let’s ____planting the trees until tomorrow. I think it’s going to rain.A. put on B. put up C. put off
How nervous we are ________ the coming high school entrance exams _______ June 15th!
It is bad ________ for a man to smoke in public places where smoking is not allowed.
—I saw you come to school by bus this morning. —Oh, I _______ come to school by bus, but it is raining today.
—Who taught ________ to write the computer programs? —Nobody. She learned it by __________.
Last month I travelled across the Sahara Desert by camel with some locals. What amazing experience!