Please do not _______ when somebody else is talkin

Please show me ____ to do it.A: whatB: howC: whichD: when

If there is any way we can be of assistance, please do not hesitateto _____us.A. con

—______,Mike. Its a little chilly in here.—Okay. Is there anything else I can do for you b

Please ________ dictionaries when you are not sure of word spelling or meaning. A.

Please give Jim the schedule for tomorrows conference when he _______ back. He is to chairthe confe

—The weather here in summer is so changeable. Please take an umbrella when you go out. —________. A.