The boy was sitting in the chair, ___ a book. 为什么填with reading

The boy was sitting in the chair, ___ a book. 为什么填with reading find the boy was sitting there,句中that 可以省略吗? The dog bit the little boy when he was sitting on the steps怎样改成被动语态 the boy is sitting on a chair 英语翻译There was a boy sitting on the chair,even though no boy had been in the room.不要翻译器翻译的 when the boy was The boy sitting by the window is the only one student who ( ) from the country .A.is .were C.was D.are It was lovely sitting in the the boy is sitting () his father and mother The boy is sitting on his father's k______. The boy was sitting there __ when I saw him.A.cry B.to cry C.crying 答案为什么是B为什么不是C? The boy was monster The boy was a monster 一道英语选择题的解释(The boy was sitting _____ his mother)The boy was sitting _____ his mother, _____ his back _____ the door. A. next to…with…to B. nearly…of…against C. close to…with…on D. near…in… the boy was in blue The boy was sitting oin his chair leisurely,____ in the magazine he was reading.A.absorbedB.absorbingC.to be absorbedD.being absorbed为什么选A不选D? ( )The Greens____at table when I went inA:is sitting B:were sitting C:was sitting D:sat A taecher ,with three students ,_____in the office now.A are sittingB is sitting C were sitting D was sitting A man was sitting in the doctor is