—What about the student in your class, Mr. Wang?
—The doctor said that sleep caused him poor memory and poor concentration.
A.lacking of | B.lacked in | C.lacking | D.lack for |
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—What about the student in your class, Mr. Wang?
—The doctor said that sleep caused him poor memory and poor concentration.
A.lacking of | B.lacked in | C.lacking | D.lack for |
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