_____ the trip from Alaska to Argentina by bike, Gregg and Brooks worked and saved money for years.
| A．To pay for | B．Paying for |
| C．Paid for | D．Pay for |
—Simon is watching TV.
—He's watching TV? He's ________to be cleaning his room.
| A．regarded | B．believed |
| C．supposed | D．considered |
—Can I use your telephone？—________.
| A．It's all right, thanks | B．Yes, go ahead |
| C．It doesn't matter | D．No, please don't do it |
It's not enough. We need ________ more than that.
| A．quite | B．most | C．very | D．rather |
The terrible weather ________ our difficulty in building the road.
| A．added | B．added up | C．added to | D．added up to |
—Yesterday we learnt the fifth, ________？
—I'm sorry, Mr. Li. I don't understand everything.
| A．didn't you | B．have you got it |
| C．do you think so | D．how about |