题文
It's not your turn yet．Please wait on the chair over there until you _______．（ ）
| A． |
are calling |
| B． |
have called |
| C． |
are called |
It's not your turn yet．Please wait on the chair over there until you _______．（ ）
| A． |
are calling |
| B． |
have called |
| C． |
are called |
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