When you stand on the top of the mountain and overlook the surrounding scenery, you will find it is ______ to climb it up with effort.
You’d better give the task to _____ you think can finish it ahead of time.
I don’t think John saw me; he _____ into space.
As a writer _____ the new century, he is popular among the teenagers.
_____ the great efforts we had made three years before, we failed to carry our plans through.
Although this medicine can cure you _____ your illness, it has a bad effect _____ you.