Nobody can achieve anything of real significance _____ he works very hard.
#31955
A
if
B
unless
C
meanwhile
D
as
推荐题目
. Just like a voyage at sea, our life journey, ______ time is limited, is full of difficulties as well as opportunities.
#34771
A
what
B
of which
C
while
D
whose
A model or an experiment in a science class can help students see things which would ______ remain hidden.
#80029
A
otherwise
B
still
C
thus
D
therefore
—People often don't appreciate what they have, do they? —No, _____ they lose it.
#30099
A
if
B
after
C
when
D
until
The roof fell ________ he had time to dash into the house to save his baby.
#80270
A
as
B
after
C
until
D
before
—What was the party like?—Wonderful. It’s years __________I enjoyed myself so much.
#31335
A
after
B
before
C
when
D
since