Never______ such a difficult problem. It took me almost half an hour to work it out.
#80170
A
had I come across
B
I had come across
C
did I come across
D
I did come across
推荐题目
Only in the library _____ the book.
#83391
A
we can get
B
can we get
C
can get we
D
we get
Little _______ about her own safety, though she was in great danger herself. 
#81410
A
did Rose care
B
Rose did care
C
Rose does care
D
does Rose care
________ going to the program If You Are the One, she knew she had to be there or her mother would be unhappy. 
#80188
A
Although much she disliked
B
Much although she disliked
C
As she disliked much
D
Much as she disliked
No sooner____ on my comfortable bed______ my telephone rang.
#84472
A
had I lain, than
B
I had lain, than
C
had I lain, when
D
did I lain , when