It was ___ he came back from Africa that year ____ he met the girl he would like to marry.A.when; thenB.not; untilC.not until; thatD.only; whenwhich one to choose,and why?

It was ___ he came back from Africa that year ____ he met the girl he would like to marry.A.when; thenB.not; untilC.not until; thatD.only; whenwhich one to choose,and why?
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
which one to choose,and why?

It was ___ he came back from Africa that year ____ he met the girl he would like to marry.A.when; thenB.not; untilC.not until; thatD.only; whenwhich one to choose,and why?
C
it is A that B 是强调句型.相当于BA.
在这里还有一个否定前移（not until的not）
转换成普通句型就是：
He did not meet the girl he would like to marry until he came back from Africa that year.

C 强调句 it that加not until

c
it is........+that 强调句