The Wenchuan earthquake happened _____ 2:28 o’clock _____ the afternoon of May 12. [ ]

Our government ______ all people to save energy and fight against pollution.

This problem is too difficult. — You can’t work out the math problem unless you ______ to your teacher carefully. [ ]

She said that she got A in this test.

May I have ________ bread? I am hungry. ——– Sorry. I don’t have ________.