Anonymous Physics (a. is) (b. are) the science of matter and energy.
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AnonymousPhysics (a. is) (b. are) the science of matter and energy.
Either Jill or her brothers (a. is) (b. are) going to meet us at the airport.
There (a. have) (b. has) been four accidents since last Friday.
Measles (a. have) (b. has) spread in the local schools recently.
General Motors (a. sells) (b. sell) several models of car.