Eighty percent of the teachers ______ women teachers in our school.
There is ______ American boy in our class and ______ boy can speak good Chinese .
—Could I have a rest, Sir.? —________, we have little time left.
—Do you think Brazil will beat Japan in the next match ?—Yes, they have better players, so they _____ to win.
Earth is becoming more and more polluted. ______, people will move to Mars one day.
_______ of the furniture in the museum ______ from Ming and Qing Dynasty.