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單項(xiàng)選擇題

Before she left on the trip, she（） hard.

A.trained
B.has trained
C.would trained
D.had trained

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單項(xiàng)選擇題

You（）to lock the door at night.

A.should
B.ought
C.must
D.shall

單項(xiàng)選擇題

-- Hello, could I speak to Don please? --（）

A.Who are you
B.What’s the problem
C.Are you Jane
D.Who’s speaking?