Don’t use water to put out the fire if oil catches fire. As is known, oil ____ float on water.

--- You ________ have bothered doing the washing-up. I could manage it myself. --- That’s OK, No problem.

(2010·四川高考)—________ I take the book out?—I'm afraid not.

— I can’t get through to the general manager’s office.—The line is busy. Someone ________ the telephone.

Lucy doesn’t mind _______ the dishes after dinner.