Children’s brains can’t develop properly_______ they lack protein(蛋白质).
#73274
A
when
B
since
C
because
D
unless
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Nobody would stand out admitting the fact, for some reason,______they lost the game.
#73063
A
that
B
which
C
what
D
why
The fact has worried many scientists ______ the earth is becoming warmer and warmer these years.
#74309
A
what
B
which
C
that
D
though
Tom said he had been working for three hours, _____ ,evidently, was untrue.
#73683
A
he
B
this
C
it
D
which
－Where do you plan to work? －I’ve made up my mind to go______ I’m most needed．
#70139
A
to the place
B
to which
C
that
D
where
With his work completed, the businessman stepped back to his seat, feeling pleased_____ he was a man of action.
#73887
A
which
B
that
C
what
D
whether