Radium salts, which have been found to _____ in bones, give rise to cancers of the bone.
. Only when class began ______that he had left his book at home.
— How was your job interview?— Oh, I couldn’t feel ______. I hardly found proper answers to most of the questions they asked.
. —Have you found the problem with the computer ? —Sorry. It ______ .
—Tom, you are smoking again?—______? It’s none of your business.
— May I remind you that a Mr. Smith is waiting outside, sir? — Oh, that’s right. I ______ about it.