题文
—When will you return the book to me?
—I’ll give it to you _________ I finish it.
| A．once | B．until |
| C．as soon as | D．unless |
—When will you return the book to me?
—I’ll give it to you _________ I finish it.
| A．once | B．until |
| C．as soon as | D．unless |
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