Spacecraft “Discovery” has failed in the course of launch. ----_______? They have been preparing for the test.
#94908
A
How come
B
When
C
How
D
Why not
推荐题目
Rather than________on a crowded bus, he always prefers___________a bicycle.
#94665
A
ride, ride
B
riding, to ride 
C
ride, to ride
D
to ride, riding
If you don’t study hard, you’ll regret, _____ you?
#95190
A
won’t
B
don’t
C
will
D
do
When I returned to my study, I found the floor thoroughly______and all my books______according to the types of books
#95019
A
changing; ranging
B
changed; ranging
C
have changed; ranged
D
has changed; ranged
 Our teacher always speaks slowly and clearly in class _____.
#91926
A
so as to be understood
B
to have understood
C
so as to understand
D
to understand