___________there are many different types of food, some animals spend their lives eating only one type.
#31689
A
Since
B
Unless
C
Once
D
While
推荐题目
We should be able to do the job for you quickly, ____you give us all the necessary information.
#79744
A
in case
B
so long as
C
if only
D
as far as
Progress so far has been very good. ______, we are sure that the project will be completed on time.
#31975
A
However
B
Otherwise
C
Therefore
D
Besides
._____ you arrive in Ireland, you will quickly find yourself on the beautiful country roads.
#34519
A
Since
B
While
C
Once
D
Until
Personally I prefer to stay up ______at night, but not ______I’ll have to drive to work the next day.
#34124
A
deeply, while
B
deep, unless
C
far, because
D
late, when
I doubted her honesty________I met her.
#30062
A
first time
B
for the first time
C
the first time
D
by the first time