Ⅰ. The path before you leads to a world full of challenges... 你们面前的路通向一个充满挑战的世界……
★challenge n. & vt. 挑战;质疑
(1)单句语法填空/完成句子
①He challenged me
to play
(play) another tennis game.
②To be honest, the job was a little bit
challenging
(challenge) for me at the beginning.
③Global warming is one of
the most serious challenges
(the most serious challenge) we are facing.
(2)替换加粗词汇
④It's really a
challenge
for us to complete the project in three weeks.