A. sells B. selling C. to sell D. sell
A. going B. he has gone C. gone D. he went
A. of climb B. for climbing C. of climbing D. for climb
A. breathing B. breathe C. breath D. breathed
A. To realize B. Realizing C. Realized D. Realize
A. Known French B. Not to know French C. Knowing not French D. Although not knowing French
A. looked at B. looking on C. looked on D. looking at
A. sit B. be sit C. sitting D. seat
A. classify B. class C. classifying D. arrange
A. astonish B. astonished C. astonishing D. astonishment
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