When the old man saw some litter on the ground, he quickly ...
Whentheoldmansawsomelitterontheground,hequickly.A．pickeditupB．pickedupitC．pickedthemu...
When the old man saw some litter on the ground, he quickly . A．picked it up B．picked up it C．picked them up D．picked up them.
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| A |
| 本题的含义是当老人看到地上的垃圾，他会很快地把它们捡起来，pick up sth为此意，sth为代词，应放在pick和up之间，垃圾为不可数名词用it，故本题选A。 |
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