—Where _____ Mary have put the empty bottles? — She _____ them away. They must be somewhere.
China has been pushing the reform of public hospitals ____ all its citizens.
I never know how colorful my life would be until I ____ my first college teacher last term.
Sir, you _______ be sitting in this sitting room. It is for women and children only.
You are supposed to collect the mistakes you have made. You will make the same mistakes ______.
When his father started questioning his explanation, he had to ____ more details for his mistakes.