Even after I ______ to soil science, I sometimes wondered whether 1 was doing what I wanted to do.
#10931
A
reacted
B
switched
C
adjusted
D
contributed
推荐题目
 The train is running ______120 kilometres an hour.
#12948
A
at a speed
B
at the speed
C
at a speed of
D
on a speed of
--- Please________ all the numbers and tell me the result.---Those numbers________ 10,000.
#13689
A
add to ,add up
B
add up, add up to
C
add up , add to
D
add up to, add to