题文
I have lost one of my gloves. I _____ it somewhere.
| A．must drop | B．must have dropped |
| C．must be dropping | D．must have been dropped |
推荐试卷
I have lost one of my gloves. I _____ it somewhere.
| A．must drop | B．must have dropped |
| C．must be dropping | D．must have been dropped |
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