Our president congratulated us on our outstanding performance and the great (achieve) _____we have made in the past few years.
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You should look over this document carefully before (sign)_____ it.
The company (found) _____over 20 years ago in Shenzhen by a Chinese businessman.
ABC Company tries hard for excellence with a committed attitude to carry out business (proper)_____.
理想电感元件存储磁能，也消耗能量。
A. 对
B. 错
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