. As they were classmates, ________ was no wonder that they should do the work in the same way.
17.The movie is to deucate people about environmental problems ______ our planet.
16.With a final conclusion _____, the meeting ended at 4:30 p.m. last Monday.
15.________ this land our home, we will fight until we die
14.How can you cross the river _________ by swimming?
13.—Jane, you have held a wonderful party. —_____.