Doctors say that the first 10 minutes _______ a traffic accident is important for saving a life．（ ）
A．inB．beforeC．afterD．during
﹣﹣﹣_________ your hands before dinner，Tony.
﹣﹣﹣No problem，Mom.（ ）
| A． |
Wash |
B． |
Washes |
C． |
Washing |
D． |
To wash |
﹣﹣﹣Is Helen here？
﹣﹣﹣No，she isn't here.She_______ in half an hour.（ ）
| A． |
arrives |
B． |
arrived |
| C． |
will arrive |
D． |
has arrived |
This Saturday is my_______ birthday.（ ）
| A． |
fourteen |
B． |
fourteenth |
| C． |
forty |
D． |
the fortieth |
The price of this piano is a little ________ .I can't afford it.（ ）
| A． |
cheap |
B． |
expensive |
C． |
low |
D． |
high |
﹣﹣﹣Excuse me，is this_______ car？
﹣﹣﹣No，it isn't.Mine is over there.（ ）
| A． |
my |
B． |
your |
C． |
his |
D． |
her |