When you go rock climbing，you need to be careful so that you don't have a（n） ______．（ ）
| A． |
chance |
B． |
accident |
C． |
secret |
D． |
action |
The twins fond of the new idea in the magazine article．（ ）
| A． |
be |
B． |
am |
C． |
is |
D． |
are |
I can't tell you what she said．I've promised it a secret．（ ）
| A． |
keep |
B． |
to keep |
C． |
keeping |
D． |
kept |
After she finished the story，Alice wrote a review for her school newspaper．（ ）
| A． |
read |
B． |
reads |
C． |
to read |
D． |
reading |
This medicine millions of people's lives since it was put into use．（ ）
| A． |
is saving |
B． |
will save |
C． |
has saved |
D． |
had saved |
Last week Vivian a dress for her mother with her first﹣month salary．（ ）
| A． |
buy |
B． |
bought |
C． |
will buy |
D． |
would buy |