Though tigers are ______ to people, they are ______ now and we should protect them or they will die out.
excellent translator , he reached a high levelof ______ in his English.
drive on the free way, MrGreen—You can when you____________ a bit moreskilled
Many young people in the West areexpected to leave ______ could be life’s most important decision —marriage—almost entirely up to luck.
One of the best ways for people to keep fit is tohealthy eating habits