Work harder, _______ you will get more grades in the coming exam.
| A．and | B．so | C．or | D．but |
-----_____ 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 |
Somebody says that a friend _____ a mirror, and I think so.
| A．like | B．likes |
| C．is like | D．does like |