Stephen Hawking believes that the earth is unlikely to be the only planet     _life has developed gradually.        
#68503
A
that
B
where
C
which
D
whose
推荐题目
— ____ visited the Shanghai World Expo is sure to tell you the place is worthy ____ twice. — You can say that again.
#69637
A
Those who have; visiting
B
Whoever has; visiting
C
Those who have; to be visited
D
Whoever has; to be visited
If it        rain tomorrow, I        visit my uncle
#41296
A
doesn’t; will
B
does ;/
C
/;will
D
does; will
   I’ll be surprised _____ an accident. He drives too fast.
#70424
A
if Tom doesn’t have
B
if Tom has
C
unless Tom doesn’t have
D
unless Tom hasn’t