Make this sentence passive. The architect calculates an estimate of the design of the building.
Open the brackets.
1. Scientists so far (to find) only 115 different kinds of atoms.
2. A battery (to produce) electricity using two different metals in a chemical solution.
3. To solve the problem of sending electricity over long distances, William Stanley (to develop) a device
called a transformer.
4. Half of the electrons (to spin) in one direction; half (to spin) in the other.
5. The concept of electric field (to be introduced) by Michael Faraday.

SashaLaik    2   09.06.2020 16:38    30