11. Where was she born?
12. How long have you learnt English for?
13. They will not get bored this way.
14. You will be late for the lecture if you don't start early.
15. I don't know how I can speed my reading.
ing形式
ing形式
to do/It/宾补
最后一张图的1 doing 2doing 3第一个to do第二个it第三个to do... 4more....more
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