We need to look at this proposal very carefully ______ A. after we have made a decision B. before we make a decision C. after we are making a decision D. before we will make a decision64/100We need to look at this proposal very carefully ______ after we have made a decisionbefore we make a decision after we are making a decisionbefore we will make a decisionGiải thíchChọn đáp án B