The tourists haven’t decided which hotel___.
问题描述：
The tourists haven’t decided which hotel___.
a、stay
b、to stay at
c、 is to stay
d、to be staying
答
b：固定句型decide to do 表示决定去做某事,to是不能省的,在这里只需要表示这个动作,所以后面直接为原形,但stay 为不及物动词 ,所以要选b