问题
选择题
Progress has been very good so far．We are，_________, confident that the work will be completed as expected．
A．however
B．therefore
C．besides
D．otherwise
答案
B
题目分析：A．however然而，B．therefore因此，C．besides此外，D．otherwise否则，句意：到现在为止一直进展得很好，我们很自信工作会象预期的那样被完成。所以选B。