Don’t promise anything ________ you are one hundred percent sure.
#37297
A
if
B
after
C
when
D
unless
推荐题目
Some ______are ______their time to help the old people.
#39614
A
volunteer; volunteer
B
volunteers; volunteering
C
volunteering; volunteers
D
volunteers; volunteers
The new teacher is quite ____ Mr Wang. I like her better.
#43358
A
different from
B
the same as
C
difference
D
the same to