She looks very sad. I want to help her, but I just don’t know ____ to do it.
#54031
A
what
B
when
C
how
D
which
推荐题目
---Which of the two T-shirts will you take?---I’ll take ___, one for my father, the other for myself.
#53261
A
either
B
neither
C
all
D
both
