It is useful to science _______ the earth as an object in space.
C
暂无解析
________they'vegottoknoweachotheralittlebetter,theygetalongjustfine.
The problem ________ when the students refused to do their homework.
ShegotajobasanassistantstagemanagerattheCambridgeArtsFestivalTheatre,thinkingthatitmight________toacareerasaplaywright(剧作家).
Thefarmerhadtowearheavybootsinthewinterbecausethefieldsweretoowetand________.
Each year in the United States, many black teenagers _______ of school, either because they cannot keep up or they have to work to support their family.