题文
You can't see anything clearly through a telescope unless it ________ correctly to
your sight.
| A．adjusts | B．is adapting |
| C．adapts | D．is adjusted |
推荐试卷
You can't see anything clearly through a telescope unless it ________ correctly to
your sight.
| A．adjusts | B．is adapting |
| C．adapts | D．is adjusted |
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