The hottest continent, Africa has a lot of resources, ______ are still undeveloped.
#75744
A
many of them
B
many of whom
C
many of it
D
many of which
推荐题目
The teacher set such a difficult problem ________none of us could solve.
#78389
A
that
B
so that
C
which
D
as
She is the only one of the persons ________ from the mistakes.
#78522
A
whom I know have learned
B
whom I know has learned
C
I know who has learned
D
I know who have learned
I’ve become good friends with several of the students ___helped me in the English speech contest last year.
#77627
A
who
B
where
C
when
D
which
Willpower is a kind of quality, ______ is ______ it takes to do anything well.
#77209
A
what; which
B
what; what
C
which; which
D
which; what