The river will be dirtier and dirtier________we do nothing to protect them.
—Would you like to come to my house to watch the Voice of China together? —________.
—Edward, remember to shut down the computer before leaving the office. —________.
—My mom makes me eat an apple every day ________ the doctor away. —So does mine.
—Excuse me, could you tell me ________?—There is a bank on the second floor. You can make it there.
—Hey, Jack. You ________ on the phone just now. But you weren’t here and the man left a phone number. —Oh? I was in the library.