Every possible means _______to prevent the air pollution, but the sky is still not clear.
He made _____ known to his friends that he didn’t want to enter politics.
Why shouldn’t I buy a new coat — I haven’t bought _____ for five years.
“_____ when does the pub stay open?”“About midnight.”
“Shall we stop for lunch _____ shall we drive on?”“Let’s stop for lunch, but the driver can’t drink _____ drive.”
Shelly had prepared carefully for her English examination so that she could be sure of passing it on her first ________.