来自刘昌玉的问题
Itriedtoput_______atelephonecalltohim,buthislinewasalwaysbusy
Itriedtoput_______atelephonecalltohim,buthislinewasalwaysbusy


Itriedtoput_______atelephonecalltohim,buthislinewasalwaysbusy
Itriedtoput_______atelephonecalltohim,buthislinewasalwaysbusy
putin:插话的意思