Not until____ did Humphrey begin working. 
#80292
A
did it stop raining
B
had it stopped raining
C
it stopped raining
D
it stops raining
推荐题目
People laugh at jokes, but seldom ________ about how they work.
#80181
A
they think
B
think they
C
they do think
D
do they think
_____ that quite a lot of people were out of work.
#82325
A
So became serious the global economic crisis
B
So serious became the global economic crisis
C
So serious did the global economic crisis become
D
Serious the global economic crisis became so
______ him to do like this, he wouldn’t have made such a serious mistake in his writing.
#82991
A
Did you persuade
B
Had you persuaded
C
If you should persuade
D
If you persuade
The pressure of this gas pipe is greater than__________.
#84351
A
the gas pipe
B
of the gas pipe
C
that of the gas pipe
D
those of the gas pipe