67. Many countries have sent up man-made communication satellites to _____ the earth, which is made possible for each household to use TV.
The sunlight came in____________ the windows in the roof and lit up the whole room.
She stepped into the bedroom quietly_________she might wake up her roommates.
—He _____to the meeting. Have you informed him of it? —Sorry. I______to.
It is not enough only ______the rules of grammar if you want to learn English well.
He ______the person referred to be put in prison.