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1.His teacher didn’t think he was bright and ——he was worth

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1.His teacher didn’t think he was bright and ——he was worth
teaching
A that B whether C不填
2.We need the same machine ____in your factory
A which is being used B as is being used
C that is being used Das it is being used
3.Your parents are the persons ____you should write
A that Bwhom Cwho Dto whom
第三题我觉得都对 因为write to sb.和 write sb.都对
1.His teacher didn’t think he was bright and ——he was worth
1、C
2、A
3、D
第一题,he was bright and he was worth teaching ,这两个短语是并列的,而且中间已经有了and连接,所以选择不填.
第二题,选择which is being used 的原因是,which是指前半句的machine,而as is being used,必须前面加逗号,是分开的两个独立的句子.
第三题,to whom ,to可以放在whom前面,也可以放在write 后面.如:Your parents are the persons whom you should write to.这样也对