— Have you found your English book? — I am not sure ____ I could have left it.
#74058
A
whether
B
what
C
when
D
where
推荐题目
The way ______ he did it was different from _______ we were used to.
#68786
A
which; what
B
/; what
C
in that; what
D
that; that
        result it is, you’d better check it in practice yourself.
#67820
A
Whatever obvious a
B
However obvious
C
However obvious a
D
However a obvious