______ he explained it to me did I make sense of what he said.
. .He once studied in Zhejiang University, ________he went abroad for further study.
. .More attention should be paid __________ English.
. .More than 60 million people in southwestern China ________the drought nowadays as a result of less rainfall, environmental damage and so on
. Please don’t do anything harmful ________ our nature, or we humans will have no ________ each other.
. .What you said just now ________me of that American professor.