Jim has _____ useful book．
Yes， and _____ book is very interesting．（ ）
| A． |
the； a |
B． |
an； a |
C． |
a； the |
D． |
an；the |
﹣﹣﹣______a big clock on the wall？
﹣﹣﹣Yes， but it was broken in the earthquake．（ ）
| A． |
Have you got |
B． |
Did you have |
C． |
Was there |
For your own______，please don′t smoke on the plane．（ ）
| A． |
feelings |
B． |
safety |
C． |
health |
Class， please teach______the article we will learn tomorrow．（ ）
| A． |
yourselves |
B． |
yourself |
C． |
ourselves |
______on the grass． It's a rule of the park．（ ）
| A． |
Step |
B． |
Don' t step |
C． |
To step |
﹣﹣﹣Excuse me， will the flight arrive soon？
﹣﹣﹣Yes， It will be landing right______．（ ）
| A． |
at times |
B． |
in time |
C． |
on time |