30.Little Tony insisted that his mother _____ him to school.A.send B.sent C.sends D.sending30.Little Tony insisted that his mother _____ him to school.A.send\x05B.sent\x05\x05C.sends\x05\x05\x05\x05D.sending

30.Little Tony insisted that his mother _____ him to school.A.send B.sent C.sends D.sending30.Little Tony insisted that his mother _____ him to school.A.send\x05B.sent\x05\x05C.sends\x05\x05\x05\x05D.sending
30.Little Tony insisted that his mother _____ him to school.A.send B.sent C.sends D.sending
30.Little Tony insisted that his mother _____ him to school.
A.send\x05B.sent\x05\x05C.sends\x05\x05\x05\x05D.sending

30.Little Tony insisted that his mother _____ him to school.A.send B.sent C.sends D.sending30.Little Tony insisted that his mother _____ him to school.A.send\x05B.sent\x05\x05C.sends\x05\x05\x05\x05D.sending
A
insist + sb + （should）+ 动词原形,表示坚持要求某人干某事,虚拟语气.

选D

选A.
类似insist suggest require demand等词及其形容词、名词形态引导的从句,其动词用原形.此用法为be型虚拟句.