I failed again in the examination and only then _____ how much time I had wasted. 
| A．I realized | B．I had realized | C．did I realize | D．had I realized |
––Linda didn’t invite us to the party.
–– ______? I don’t care.
| A．For what | B．So what | C．What’s on | D．What’s up |
The Yangtze River passes all the way through the province ______ its long journey _______ the coast.
| A．on; of | B．on; to | C．to; to | D．to; of |
The soldier rushed inside, his right hand _______ a gun and his face _______ with sweat.
| A．held; covered | B．holding; covering | C．holding; covered | D．held; covering |
To find out _______ young people think about the future of urban life, a teacher in the US. asked his students to think ______ they would run a city of 50,000 people in 2025.
| A．what; how | B．how; what | C．what; what | D．how; how |
I was disappointed to spot the seller ________ in the deal and decided to deal with another one.
| A．to cheat | B．cheating | C．cheat | D．cheated |