题目内容
Your paper must _______ as soon as the bell _______.
A. hand in; rings B. hand in; will ring
C. be handed in; rings D. be handed in; will ring
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题目内容
Your paper must _______ as soon as the bell _______.
A. hand in; rings B. hand in; will ring
C. be handed in; rings D. be handed in; will ring