题目

The father, along with his four children ________ Hangzhou. When they will be back ________ fixed. A．have gone to; isn't B．had gone to; is not C．went to; aren't D．has gone to; has not been 答案：答案：D解析：语意：爸爸和他的四个孩子一起去了杭州，什么时候回来还没有定。单数名词作主语，后面有along with，together with，as well as，with等引导的词组时，谓语动词仍用单数形式。另外，从句作主语，表示一件事时，谓语动词也要用单数形式。结合句意可知，前后都应用现在完成时，因此选D。