Among the crises that face humans ________ the lack of natural resources.
#81014
A
is
B
are
C
is there
D
are there
推荐题目
---Do you go to swim every day?---No, but I ________.
#83127
A
used to do
B
used
C
used to do it so
D
used to
Not until ____________ to the top of the palace __________ caught.
#82669
A
he got; was he
B
did he get; he was
C
he got; he was
D
did he got; was he
Many provinces have been hit with smog. If _______ unsolved, the problem may lead to more serious results.
#80140
A
having left
B
to leave
C
left
D
leaving
Evidence has been found through years of study______children’s early sleeping problems are likely tocontinue when they grow up.
#80750
A
why
B
how
C
whether
D
that
So far as I am concerned, he is a determined man and on no account ______ die easily.
#80477
A
he says
B
he does say
C
says he
D
does he say