1．We can ________ (克服) any difficulty, however great.
答案：overcome
2．In the final ________ (一集) we will find out who did the murder.
答案：episode
3．He is the least ________ (有吸引力的) character, to me at any rate.
答案：appealing
4．Why are you so ________ (粗鲁的) to your mother?
答案：rude
