5.2 课时作业
Ⅰ.根据提示，写出单词的正确形式
1．Mary explained what we were to do ________ (brief)．
2．We are all impressed by her total ________ (devote) to her job.
3．To write such a book, one needs experience in ________ (add) to time.
4．Let's go to the theatre first and eat at a restaurant a________.
5．We must s________ out the good apples from the bad ones.
6．Thanks for the ________ (invite) to your birthday party.
7．He was hurt falling off his bike, and now his shoulders are still ________ (pain)．
8．The children like to ________ (蘸) their bread into the milk.
9．To succeed, first of all, you should be ________ (有信心的) about yourself.
10．We didn't have a receiver ________ (灵敏的) enough to pick up the signal.
答案：1.briefly 2.devotion 3.addition 4.afterwards
5．sort 6.invitation 7.painful 8.dip 9.confident 10.sensitive
