单项选择题

They insist that a computer ______ only what our thinking humans have planned.
A) have done C) do
B) be doing D) does
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单项选择题
I was just to get up ______ a knock was heard on my door. A) as C) while B) when D) since
I was just to get up ______ a knock was heard on my door.
A) as C) while
B) when D) since
单项选择题
The rain ______, the soldiers continued their march. A) stopping C) stopped B) having stopped D) being stopped
The rain ______, the soldiers continued their march.
A) stopping C) stopped
B) having stopped D) being stopped
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