Ⅰ.单句语法填空
1.The (propose) for our trip made me satisfied.
答案proposal
2.I enjoyed outdoor activities,and some of them were (challenge).
答案challenging
3.I found going fishing in the evening quite fun and (enjoy).
答案enjoyable
4.It is widely acknowledged that a lot of English words are difficult, (especial)in Biology.
答案especially
5.He will explain how the expert made such a positive (contribute) to the education.
答案contribution
