______ some problems have arisen in the process, we are confident that we can handle them.
#93100
A
As
B
If
C
While
D
Since
推荐题目
As a boy of six,           .
#93476
A
Tim’s parents asked him to play the piano every day.
B
Tim and his parents would play the piano together.
C
Tim had to practice playing the piano every day.
D
to learn playing the piano is too hard for Tim.