It’s unfair that he gets very little in for his hard work.
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.
If he _________ more time practicing speaking English before, he ____ able to speak it much better now.