Your shoes are too dirty. You’d better________.
| A．put on them | B．put them on |
| C．take off them | D．take them off |
_____ he is ill, _____ he still goes to work.
| A．Although; but | B．Because; so |
| C．/; so | D．Though; / |
-----_____ do you exercise?
-----Once a week.
| A．How long | B．How often |
| C．How far | D．How soon |
Which is _____, the sun or the moon?
| A．big | B．biger | C．bigger | D．more big |
Lily and Lucy are twins, they _____ good girls, they often help others.
| A．are all | B．all are |
| C．both are | D．are both |
Your book is easier than _____.
| A．she | B．her | C．hers | D．Herself |