President Obama told television viewers that he saw ______ as his duty to run for a second term.
#15249
A
one
B
that
C
this
D
it
推荐题目
They often change the kind of crop in each field ____ few years, for example, growing corn or wheat and then the next year peas or soybeans.
#16182
A
every
B
a
C
each
D
some
—Could you please spare me some time? I’ve something to talk with you.—Not now. ______time，please.
#16634
A
Any
B
Some
C
Some other
D
Other
_____of my parents used to travel all over the country on their own.
#57757
A
Both
B
All
C
Either
D
Each
—Which of these two English books will you borrow?—I’ll borrow ____________ of them because they are very interesting.
#57811
A
either
B
all
C
neither
D
both.