Everyone is here. Let’s our class now.A. beginB. beganC. beginningD. to begin

问题补充：

Everyone is here. Let’s our class now.

A. begin

B. began

C. beginning

D. to begin

答案：

(答案→)A. begin

B. began

C. beginning

D. to begin

解析：使役动词let后通常跟动词原形作补语，故本题选A。