Answer:
b) use to
Explanation:
This is because at the beginning of the sentence there is already a past tense "did" so the verb after that would have to be in base form which would be "use to". It's a rule so I can't really explain much.
Answer:
It proves he was racist against Jewish people.
Explanation:
For Stalin, whose deeds easily matched those of Hitler and whose deceits had been evident throughout his life, the Doctors' Plot and intended show trial were meant to cleanse the Soviet Union of “foreign,” “cosmopolitan,” and “Zionist” (read Jewish) elements.
I think this would be a or d
The primary accent in the word "precipitate" falls on the syllable "cip"
pre- 'cip -i- tate (i just divided it into syllables, not written it phoneticallly): the apostrophe shows where the accent falls.