More bison were killed．The bison population is thought ______ from 60 million to just a few hundred between 1850 and 1910.
#96722
A
to have fallen
B
having fallen
C
to fall
D
falling
推荐题目
.All the students were listening carefully, with their eyes _____on the teacher.
#96083
A
fixed
B
being fixed
C
fixing
D
to fix
The time he has devoted in the past years _______ the disable is now considered ________ of great value.
#98958
A
to help; being
B
to helping; to be
C
to help; to be
D
helping; being
I suggest that the person ____put into prison.
#93214
A
refer to
B
referred to was
C
referred to be
D
referring to should be
--- What do you suppose made her worried?--- _________ a new cell phone.
#90368
A
Lose
B
Lost
C
Losing
D
Because of losing
___ the right kind of training, these teenage soccer players may one day grow into other international stars.
#89265
A
Giving
B
Having given
C
To give
D
Given