---Would you please repeat the grammar rules again? ---Of course, but I am sure that you _______ to me carefully, as I have told you twice already.
—Where is Bob? I cannot find him anywhere.—He have been off long. I heard him make a call just now.
_______ is known to us all is that Madame Curie, _______ life was devoted to science, wonthe Nobel Prize twice.
The tablecloth _____ 18 by 20 feet. A. is measured B. measures C. measure D measuring
It is the test system, _____ the teachers, that is to blame for the heavy burden of middle school students nowadays.
--- Are you firmly against any independence move by Taiwan? --- Of course. That is _______ our basic interest lies.A. why B. when C where D what