Do you have any idea when the project will be carried out?—No, but I have heard that it was not until last month _______ it was approved.
#92086
A
that
B
when
C
since
D
before
推荐题目
Rather than            on a crowded bus, he always prefers           a bicycle.
#92498
A
ride; ride
B
riding; ride
C
ride; to ride
D
to ride; riding
Not until all the fish died in the river      how specious the pollution was. 
#93485
A
did the villagers realize
B
that the villagers realized
C
the villagers did realize
D
didn’t the villagers realize