Tom was about to close the window his attention was caught by a bird.A.whenB.ifC
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Tom was about to close the window ______ his attention was caught by a bird.
| A.when | B.if | C.and | D.till |
试题答案
A

Tom was about to close the window ______ his attention was caught by a bird.
| A.when | B.if | C.and | D.till |
A