______ is said, the Yeti is a large, hairy animal that walks on two feet like a human being.
The students expect there ______ more reviewing classes before the final exam.
______ the secret of nature, the young scientist has little time for entertainment.
_________ into a famous university made his parents very happy.
________the working efficiency, the boss allows the employees to have a coffee break.
Only when he read this novel for a second time ________ to appreciate its beauty.