He looked at the envelope and __________ Jenny’s handwriting immediately.
#13392
A
understood
B
knew
C
recognized
D
recovered
推荐题目
 We must apply our minds to ________a solution.
#13045
A
find
B
finding
C
found
D
being found
This field of scientific research remains________.
#12596
A
to be untouching
B
being touched
C
to be untouched
D
untouched