1、____in thought,he almost ran into the car in pront of him

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1、____in thought,he almost ran into the car in pront of him
A、To lose B、Lost C、Having lost D、Losing
2、____these pictures,I couldn't help thinking of those days when I was in Beijing and ___from the top of a thiety-storied building,Beijing looks more beautiful
A、Seeing,seen B、Seen,seeing C、Seeing,seen D、Seen,seen
3、____his head high,the manager walked into the room to attend the meeting____
A、Hholding;being held B、Held;holding C、Having held;held D、Held;to be held

1.b 2.c 3.a
再问：可以给解析么
再答：词组be lost in 这里lost是形容词，形容词做状语时不带be动词，当然lost也是lose的过去分词，当做非谓语来理解也可以，逻辑主语是he，是被动关系，因此用过去分词第一个空是现在分词做状语，逻辑主语是I，和see是主谓关系，因此用现在分词，第二个空逻辑主语是Beijing,北京肯定是被看，和see是动宾关系，因此用过去分词 3. 第一个空分词做状语，逻辑主语是he,和hold 是主谓关系，因此用先分，第二个空是做后置定语being held表示正在被开，held过去分词表示会已经开完了，放在这儿说不通，to be held表示将要开

1、____in thought,he almost ran into the car in pront of him 49.( ) in thought,he almost ran into the car in front of him lost in thought , he almost ran into the car in front of him 1._ in thought ,he almost ran into the car in front of him. Lost in thought,he almost ran into the car in front of him. （lost）in thought,he almost ran into the car in front of him. Lost in thought,he almost ran into the car in front of him.为 _____in thought,he almost ran into the car in front of him.A __in thought ,he almost ran into the car in front of him. ----In thought ,he almost ran into the car in fro _______ in thought,he almost ran into the car in front of hi ________ is thought,he almost ran into the car in front of h