是at the event还是in the event?在竞赛中

是at the event还是in the event?在竞赛中 是join in the event还是 join the event? 活动event,不知好用join in吗? 初中英语介词（ ）weekends 是in还是at（ ）the evening of August 8th 2008,是in 还是on还是at in the event of in the event In the event in the event 是in the afternoon of April 30th 还是 on the afternoon of April 30th May 5th 前面是on 还是in 还是at?为什么?、、.. event是用join还是take part in 是at night还是in the night look at sb in th mirror,in the local mine participate in the scheduled event是啥意思啊? 英语 宾补 We found ourselves back in a village at the foot of the mountain.这句话中的宾补是 back还是 back in a village at the foot of the mountain?如果是back,那 in a village at the foot of the mountain又是什么?in a village at th At the opening event of the 1984 Olympics,he won a gold medal in shooting.翻译 “()of June 15th.是at night还是on the night? at the turn of 20th century是20世纪初还是20世纪末? What's th most popular sports event in China?