_______ confidence and patience, they failed to settle the difficult problem.
#89586
A
Lack in
B
Lacking of
C
Lacking
D
Having lacked
推荐题目
————.the website of www．google．com, and you will learn a lot about Obama’s first official visit to China．
#95757
A
Searching
B
To search
C
Having searched
D
Search
__________from what everyone says about him, I would say he has a good chance of winning.
#95521
A
To judge
B
Judging
C
Judged
D
Having judged
in the ticket hall for almost an hour, I suddenly realized I had left my ID card home.
#94251
A
To wait
B
To have waited
C
Waiting
D
Having waited
Robert is said______ abroad, but I do not know what country he studied in.
#98572
A
to have studied
B
to study
C
to be studying
D
to have been studying