问题
选择题
______you are always optimistic and self-confident, I can't wait to make friends with you.
A．Though
B．Since
C．While
D．So
答案
答案：B
题目分析：考查连词。句义：因为你总是乐观自信，所以我迫不及待地和你交朋友。Though，尽管，虽然，since因为由于，while当。。。的时候，尽管，so所以。所以B正确。