Раскройте скобки, употребляя глаголы в активном или пассивном залоге:
These important calculations (to perform) at the moment?
- Are these important calculations being performed at the moment?
- Are these important calculations performed at the moment?
- Have these important calculations been performed at the moment?
- These important calculations are being performed at the moment?
- These important calculations are performed at the moment?
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