TOEIC Grammar - choose the right word

ScottsEnglishScottsEnglish Administrator Posts: 1,184 admin ✭✭✭✭✭✭✭
edited June 2016 in TOEIC Test

Choose the right word for the following sentence.


We are very _______________________________ the fall in stock due to manufacturing difficulties.

A.  concerns of
B.  concerned
C.  concerned that
D.  concerned about


We are very concerned about the fall in stock due to manufacturing difficulties.

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