we invited them to have a picnic,but they___.A.want toB.didn'tC.didn't want to doD.didn't want go

答案是D为什么首先我们看整个句子的大意应该是：我们邀请他们一起去野炊，但是（这个我们可以从but推测出来）他们不愿意（或者是不想）去。所以首先我们就排除了肯定回答，也就是选项A。而B选项呢，将其置于居中，你读一下，会不会觉得好像这个话不完整呢？这也就是根据预感排除。最后我们来看选项C，didn't want to do,到底是去do what? 但是选项D则相当于是didn't want to go(for a picnic),放到句子中去，应该读得通顺了吧！更何况go for a picnic=have a picnic