题目内容

—Tony, could you give me a hand?
—Wait a minute.I ______.
A．lock the doorB．will lock the door
C．am locking the doorD．was locking the door
C
句意：托尼，你能帮我一把吗？——等一下，我正在锁门。结合语境可知下文描述的是现在正在做的动作，故用现在进行时态，选Ｃ。
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