1. ________（雄心）never dies until there is no way out.
2. There must be something wrong with my ________（听觉）. Can you repeat what you said?
3. It is very ________（笨拙的）of me to step on your foot.
4. I hope this summer holiday will be ________（有益的）to your study.
5. It’s difficult for the old woman to ________ (适应） to the wet climate here.
