TOEIC Grammar - choose the right word

ScottsEnglishScottsEnglish Administrator Posts: 1,296 admin ✭✭✭✭✭✭✭
edited June 2016 in TOEIC Test

Choose the right word for the following sentence.

The software ____________________________ thoroughly before being marketed.

A.  checked
B.  was checked
C.  has been checking
D.  check


The software was checked thoroughly before being marketed.

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