______ takes a lot of concentration and a great sense of balance to stay on it.
.The ____ in these villages has to get its water from well-spring.
—Where is your Chinese teacher from? —I’m not sure, but his Chinese ____ Hebei.
The birds flew ___ the direction of the south.
Soon came the bad news _____ the ship sank when it sailed ____ the coast.
. I was disappointed with the film I had expected __ to be much better.