_______ don’t you let your parents know you need them?
| A．When | B．Where | C．How | D．Why |
Scientists from different countries are trying to_______ a good way to solve the energy problem.
| A．keep up with | B．come up with |
| C．catch up with | D．meet up with |
--- Good news. Li Na has become the first woman to reach a Grand Slam final.
---Fantastic! Nothing sounds _________.
| A．good | B．best |
| C．better | D．worse |
We should wear special boots __________ us floating away into the space .
| A．to prevent | B．preventing |
| C．prevent | D．prevented |
---I’m too nervous to give a talk in front of so many people.
--- _________, Maria. I think you can make it.
| A．That’s true | B．With pleasure |
| C．Come on | D．You’re right |
---Mr. Wu, I can’t understand everything in class.
---Don’t worry! I’ll _______ the main points at the end.
| A．record | B．review |
| C．require | D．remember |