There was a murder in one of the poorest suburbs in the city the other day. Now the police are turning the whole house upside down __________ clues.
______ a good insulator(绝缘体) , rubber is often used in cables.
I felt ______ tired, but he didn’t stop ______.
All of us need ______.
____ knocked down and hurt worried her friends.
I’d rather he ______ tomorrow afternoon.