3.Although he is __________ his late seventies,he is still very healthy.A.at B.on C.by D.in

来源：学生作业帮助网编辑：作业帮时间：2024/11/16 21:43:50

x��)�3�s�)��/M�P�HU�,V�� 7'�$U�8�,5�$3�X��$3'G�,��)��R�Q/�D�I/?O�Y/�R�E/3�&�H��/:]t^��I�f��ɎUϦo{9}˳u[u�u6<ٽ��I%@��S�ӠZ*��jx�`;Lݮ)/�/}>e�+��yvPـ9@3��RՋ6>�� Ov�27x��$A��

3.Although he is __________ his late seventies,he is still very healthy.A.at B.on C.by D.in
3.Although he is __________ his late seventies,he is still very healthy.A.at B.on C.by D.in

3.Although he is __________ his late seventies,he is still very healthy.A.at B.on C.by D.in
选D,这里的 seventies是一个时间段,所以和at the age of seventy不一样,所以应该用in

at one's seventies在某人70岁