—What do you think of the new bridge?
—I have never seen _____ before.
| A．so a long one | B．so long one |
| C．such a long one | D．a such long one |
Sam spends two hours _______ his homework every day.
| A．to do | B．doing | C．do | D．does |
—Do you like swimming?
—Yes, swimming is a good way _______ fit.
| A．keep | B．to keep | C．keeping | D．keeps |
—Would you like to climb mountains with me this Sunday?
—I’d love to. But I _______ play table tennis against Class Three.
| A．am going | B．am going to |
| C．am | D．going to |
—What about this pink skirt,madam?
—This one is really beautiful. I will buy it_________it's a little expensive.
| A．though | B．but | C．because | D．and |
Only when the work is done ，___________ be able to go back home.
| A．you have | B．you will |
| C．will you | D．have you |