Due to the new safety regulations some old machines ___ last year.
ক) were replaced
খ) have been replaced
গ) was replaced
ঘ) had replaced
Related Questions
ক) had been
খ) was
গ) has been
ঘ) is being
ক) Group discussion
খ) Counselling
গ) Use of Multimedia
ঘ) Orientation
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