不定式作定语和状语 — 英语填空题
题目
用括号内动词的适当形式（不定式或其他形式）填空。（1）The astronaut has a lot of experiments ___ (conduct) during the mission. （2）___ (support) the space station, scientists worked day and night for months. （3）China became the third country ___ (send) humans into space independently.