4. don’t be so miserable! 别这样愁眉苦脸的. 5. cheer up! things will work out for the best. 高兴点儿.事情会有好结果的. 6. take heart- we’ll find a way out. 振作起来,我们会有办法的. 7. keep trying! don’t give up the ship. 继续努力! 别轻易放弃!