____ we know now, oceans cover more than 70 percent of the earth.
—Do you hear Jim and Mary broke up?—No,I haven't heard of it,and neither ________ about it.
The teacher together with the students ________ discussing Reading Skills that ________ newly published in America.
So much progress ________ made in studies that he is sure to pass the coming examination.
The computer was used in teaching.As a result,not only ________,but students became more interested in the lessons.
Some of you may have finished Unit One.________,you can go on to Unit Two.