The trip from Tianjin to Beijing _____ about two hours by coach.
| A．spends | B．costs | C．takes | D．pays |
Can you call me when you ________ home?
| A．get back to | B．get to back | C．get back | D．get to |
We are from China and we _______ Chinese.
| A．say | B．talk | C．speak | D．tell |
Some students are so ______ that they often make mistakes in their homework.
| A．carful | B．serious | C．careless | D．successful |
__ we are young, we can still do something to help protect the environment.
| A．If | B．Since | C．Because | D．Though |
--- Jimmy, don’t put this pair of trousers on the sofa.
--- Sorry, mum. I will _____________ right now.
| A．take it away | B．take them away |
| C．knock it off | D．knock them off |