How can I repay your many ______(友善行为).
He who ______ not reach the Great Wall is not a true man. (do)
He is one of the teachers who ______ popular in our school. (be)
Either he or you ______ going to carry out the work.(be)
70% of the earth ______ covered with water. (be)
Mary together with his parents _______ going to New York. (be)