高中英语题两道
Itwas___greatcomforttoseetheboycometohimselfafter___two-houroperation.
填上两个冠词,
此题的问题在后一空.
TheOralEnglishContestwillsoontakeplaceandallthestudentsarewelcometoparticipate.这句最后为什么把participatein的IN省略了?