All reference books ________， he didn't find the key to the question.
#88808
A
being searched
B
searched
C
to be searched
D
were searched
推荐题目
____twice a year, whether it is a car or a bus or a truck, is the rule that every driver must obey in this city.
#98186
A
Examining
B
Examined
C
Being examined
D
Having been examined
Mr．Smith was very glad _____ as the manager of the company．
#93725
A
being appointed
B
having appointed
C
to have appointed
D
to have been appointed
Moreover,27.6 percent of those ____preferred reading on their mobile phones, which was 4.6 percent higher than last year.
#94172
A
surveying
B
to survey
C
surveyed
D
having surveyed
Cell phones are now widely used, _______possible for us to talk to anyone from almost anywhere.
#97149
A
make it
B
to make it
C
making
D
making it
________ that I was a regular visitor, the servant let me in.
#97711
A
Having seen
B
Seen
C
Seeing
D
To see