If a=”4,” b=”5,” what’s the answer to the question “ a + 2ab +1 =?”—.
Qinghai-Tibet Railway(青藏铁路) was completed last year. It is the __________ railway that connects Tibet with the other parts of China.
Mrs. Brown was much disappointed to see the washing machine she had _____ went wrong again.
The new law says that people_______ drive after drinking wine.
Have you finished reading The Twilight Saga? —No, I _______ my homework all day yesterday.