题文
What were you doing at nine o'clock last night？
______.（ ）
| A． |
I take a shower |
| B． |
I took a shower |
| C． |
I was taking a shower |
| D． |
I am taking a shower |
What were you doing at nine o'clock last night？
______.（ ）
| A． |
I take a shower |
| B． |
I took a shower |
| C． |
I was taking a shower |
| D． |
I am taking a shower |
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