问题
选择题
Progress so far has been very good.We are________confident that the work will be completed on time.
A．otherwise
B．therefore
C．however
D．somehow
答案
答案：B
词义辨析,四个选项分别表示否则、因此，可是和莫名其妙的，根据题意选B，进程到目前非常顺利，我们因此非常自信……
