Let those in need that we will go all out to help them. (·陕西 13)A. to understandB. un

问题补充：

Let those in need that we will go all out to help them. (·陕西，13)

A. to understand

B. understand

C. understanding

D. understood

答案：

A. to understand

(答案→)B. understand

C. understanding

D. understood

解析：

句意为：要让那些需要帮助的人认识到我们会全力以赴地帮助他们。let后跟不带to的不定式。