How can you expect him to make any progress _____ you never give him a chance to have a try?
#30913
A
when
B
unless
C
even though
D
until
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Some people have the idea_____ you can cross Canada in less than five days.
#31959
A
what
B
that
C
which
D
when
This is a picture of Dr. Yuan, a scientist ____ is well known in our country.
#33981
A
which
B
who
C
whom
D
whose
．China is playing an important role in the world. That’s_______Laura has come to study Chinese.
#34794
A
because
B
why
C
how
D
that