A. When do you suggest that we B. When do you suggest we

C. Do you suggest when should we D. Do you suggest that when we should

【答案】B

【解析】

考查插入语。句意:你建议我们什么时候去度假。do you suggest 为插入语，在句中不做句子成分，其后的句子为陈述语气。故B选项正确。