﹣﹣﹣Why are you in such a hurry？
﹣﹣﹣Because the class ______ for 10 minutes.（ ）
| A． |
has been on |
B． |
has begun |
| C． |
is on |
D． |
begins |
﹣﹣﹣Why are you in such a hurry？
﹣﹣﹣Because the class ______ for 10 minutes.（ ）
| A． |
has been on |
B． |
has begun |
| C． |
is on |
D． |
begins |
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