Passive voice in Bioengineering -Present perfect and past simple

Select the option with passive voice in Present Perfect:

• Technologies have involved nanoscale structures for many years

• Concepts of nanotechnology have been considered more important than a definition

• Nanotechnology has great impact on today's world

• New innovations were highlighted in the meeting

Which option expresses passive voice in past simple:

• The bioengineer was working in a new experiement

• The studentswere trying to figure out the formula

• The new methods were found out by a professional

• She was carrying out a new study

Tissue engineering has been _____ by researchers

• study

• studies

• studied

The medical techniques (a)   been enriched by nanotechnology

Which option is correct? Tissue engineering has not been ______ with bad cells

• developed

• develop

• developt

Was the patient (a)   by the experiment? (Affect)

Why is this sentence incorrect? The scientists was surprised by the results of the expetiment

Select the correct option. She has been _____ by the new findings

• surprise

• surprised

• surprises

Write the correct form of the verb: The bioengineer was (a)   with the innovations on tissue engineering (fascinate)

The students (a)   taught the implications of nanotechnology