Our teacher often asks us questions in groups.A. discussB. to discussC. discussingD. discu

问题补充：

Our teacher often asks us questions in groups.

A. discuss

B. to discuss

C. discussing

D. discussed

答案：

A. discuss

(答案→)B. to discuss

C. discussing

D. discussed

解析：句意：我们的老师常常要求我们分组讨论问题。Ask后接带to的不定式做宾语补足语，表示具体的将要进行的动作，故选B。