Our teacher told us in class .A. listened carefullyB. to listen carefullyC. listened care

问题补充：

Our teacher told us in class .

A. listened carefully

B. to listen carefully

C. listened careful

D. to listen careful

答案：

A. listened carefully

(答案→)B. to listen carefully

C. listened careful

D. to listen careful

解析：句意：我们的老师告诉我们在课堂上要认真听讲。Tell告诉，后面接带to的不定式做宾语补足语。本句中listen是实意动词，后面用副词做状语，故选B。