Question

Progress so far has been very good. ______, we are sure that the project will be completed on time.

A．However

B．Otherwise

C．Therefore

D．Besides

Answer 1

C

本题考查副词的用法。however不管怎样；otherwise否则；therefore所以；besides除此以外。根据句意判断，前后两句为因果关系，故C项正确。