______ the sound on the step, the boy rushed out to see if his mother had come back.
The jacket was made specially for the king. When we got here, he had done____ everything.
It’s ___ impossible for us to finish the task within half a month.
I’m afraid I am not fit for the job, for it is_____calling for much patience.
We’ll never forget the ____Premier Chou Enlai.
The boy was badly hurt in his head, however, still _____. .