—May I go to the theatre with you?
—I’m afraid not ____ you have a ticket, because I have only one.
| A．since | B．if |
| C．unless | D．though |
—May I go to the theatre with you?
—I’m afraid not ____ you have a ticket, because I have only one.
| A．since | B．if |
| C．unless | D．though |
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