—What about the student in your class, Mr. Wang?—The doctor said that sleep caused him poor memory and poor concentration.
—Do you know what to do in the lab, Mike? —Oh, sorry I don’t----just _____if I could get a ticket for the Shanghai Expo.
While reading, you should not always ___________ a dictionary to find the meaning of each new word.
. After dry days, everyone appreciates ______ when there is a timely rain.
—What about the picnic plan? —Not ________ yet. It’s being discussed..
Look at the new computers, of ______ none are produced abroad.