17.The challenge is not one of expansion._______,the rapid growth in enrollment over the last 40

.The Challenge will future is the we challenge what face the in What is the biggest challenge in the life 17.The challenge is not one of expansion._______,the rapid growth in enrollment over the last 40 Change is the most import challenge of our time. martin is f( ) the biggest challenge in his work It is tremendous challenge face the challenge是什么意思 挑战 THE CHALLENGE怎么样 THE SKETCHBOOK CHALLENGE怎么样 tacking the challenge是什么意思 the balance challenge yourself against the challenge rising to the challenge 6The world’s population is one of the biggest_________(challenge) of the world today. Though the job is very difficult,I like what is really ----- 动词为challenge 句子结构和成分分析：It is the same with the challenge that come with friendship. will future is the we challenge what face the in 连词成句如题