________ there are living creatures in the outer space as those on Earth hasn't been proved until now.
#30306
A
How
B
When
C
Where
D
Whether
推荐题目
Liao Fan, a Chinese actor, finally got to know real success tastes like when he won the prize for Best Actor at the 64th Berlin film festival.
#30101
A
when
B
how
C
what
D
where
Take an active part in sports or other activities you enjoy ,________ you can meet various kinds of people.
#31122
A
what
B
there
C
which
D
where
(2013·杭州模拟)Encouraged by my science teacher, I set about my studies on developing my product, I hope I will succeed in applying for a patent(专利权).
#30598
A
with whom
B
to whom
C
through which
D
for which
Mountain climbing ________ be very tiring, and many people feel sick ________ the atmosphere gets thinner.
#31554
A
may; while
B
can; as
C
must; though
D
should; for