____ man realized that the brain controlled our thinking.
A. It was not until the 18thcentury
B. It was the 18thcentury since
C. Not until the 18thcentury did
D. It was until the 18thcentury which
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It was on the date_____ they went abroad
A. on which
B. when
C. that
D. which
Itwas not until the subprime loan crisis ____ great damage to the American financial system that Americans _____ the severity of the situation.
A. caused, realized
B. had caused, realized
C. caused, had realized
D. was caused, had realized
It was ______ he came back from Africa that year_____ he met the girl he would like to marry.
A. when; then
B. not; until
C. not until; that
D. only; when
It from my parents ______ I learn a lot about life.
A. who
B. whom
C. which
D. that