固态空气
幼苗
共回答了14个问题采纳率:85.7% 举报
he is looking forward to __going_(go) to the concert and see the famous singerhe spend as much time as he could_practice__(practice) writing in english
the garden should warn people _not to step__(not step) on the grass
he is looking forward to __going_(go) to the concert and see the famous singerhe spend as much time as he could_practice__(practice) writing in english
the garden should warn people _not to step__(not step) on the grass
look forward to doing
could+动词原形
warn not to do
1年前
8