-Are you going to the airport by bus？
-I'd rather take a taxi.It's .
| A． |
quicker |
B． |
cheaper |
| C． |
the quickest |
D． |
the cheapest |
-How do we turn on the oven？
-I you，weren't you listening？（ ）
| A． |
tell |
B． |
am telling |
C． |
will tell |
D． |
have told |
There are no buses to the beach. you have a car，it's difficult to get there.（ ）
| A． |
Since |
B． |
After |
C． |
Unless |
D． |
Because |
These beautiful animals are endangered.We must them.（ ）
| A． |
save |
B． |
show |
C． |
stop |
D． |
catch |
Sue works ，so she never seems to make mistakes.（ ）
| A． |
late |
B． |
alone |
C． |
happily |
D． |
carefully |