问题:
It was __________ he took off his dark glasses __________ I realized he was a famous singer.
A.until,that
B.not until,that
C.not until,when
D.when,then
It was __________ he took off his dark glasses __________ I realized he was a famous singer.
A.until,that | B.not until,that | C.not until,when | D.when,then |
参考答案: