ⅰ. 用括号中所给词的适当形式填空 1. the foreigners came to china in order to learn chinese _______ skills. (agriculture) 2. mexico gained its _______ from spain in 1821. (depend) 3. the party was in _______ of mother’s silver wedding. (celebrate) 4. the waitresses are standing in a row to wait for the_______ of our guests. (arrive)