Batsfly,ratherthanglide,andthusaretheonlymammalscapableoftrueflight.
Mycameracanbe_____totakepicturesincloudyorsunnyconditions.
Inthatschool,Englishiscompulsoryforallstudents,butFrenchandRussianare_________.
社会工作者分析和处理问题的基本出发点是()。
Formerly,intheUnitedStates,manynursesworkedasprivatedutynursesratherthaninhospitals.
