________the American economy expanded at an annual rate of 2.5 percent in July—September, it faced a long road to recovery.
#67413
A
Since 
B
If
C
While 
D
When
推荐题目
 The scientist, __________ my father works, is about 50.
#66953
A
on whom
B
to which
C
with which
D
with whom
 Look, a group of students are playing the violin there, _______ their teacher as the conductor.
#66829
A
in front of them stand
B
in front of them stands
C
in front of whom standing
D
in front of whom stands
If it _____ tomorrow, we won’t go to the park.
#41091
A
rained
B
rains
C
will rain
D
raining