非谓语改从句Outdoor Film Festival,held in December,is the first festival in Asia____on cycling mountain bike documentaries and environmental protection movies.A focused B focusing C to be focused D.had focused能把他改为从句么
问题描述：
非谓语改从句
Outdoor Film Festival,held in December,is the first festival in Asia____on cycling mountain bike documentaries and environmental protection movies.
A focused B focusing C to be focused D.had focused
能把他改为从句么
答