— 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
He makes about $1000 every week，much ______ is spent on books.
#72239
A
of which
B
in that
C
among which
D
of it
The little girl who got lost decided to remain _________she was and wait for her mother.
#74436
A
where
B
what
C
how
D
who
The explorers failed to find the cave because it was not located they had expected it to be.
#66934
A
which
B
that
C
where
D
what
I’ll take you to a shopping center nearby_____you may buy all_____you need.
#73700
A
that; that
B
which; that
C
where; which
D
in which; 不填
--- What did your parents think about your decision?--- They always let me do _______ I think I should.
#73901
A
when
B
that
C
how
D
what