---How much difficulty did you have________________ this problem?
---_____________. It's quite easy.
| A．to solve, Nothing | B．solving; None | C．to solve, None | D．solving; Nothing |
The cleaners must prevent the street _____.
| A．from getting dirty | B．to dirty |
| C．to get dirty | D．getting dirty |
---Jim, you speak so fast, I can’t_____you..
----Oh,sorry, I will say it again slowly.
| A．listen | B．watch | C．follow | D．think |
—Hi, Bob! I can’t find my story book. Have you seen it?
—Sorry, I haven’t. Why not ask Jim? Perhaps he’s seen it _____.
| A．anywhere | B．everywhere | C．nowhere | D．somewhere |
In India,about_____ of people live in the country and some of them live a very poor life.
| A．three fifth | B．third fifth | C．third fifths | D．three fifths |
Every student is _____ to obey the school rules.
| A．suppose | B．supposed | C．should | D．ought |