1) You have to pay back in time.
你必须及时偿还。
2) You will have to pay up.
你必须付款。
3) You must do with what you've got.
你必须知足。
5) You must make good use of every minute.
你必须分秒必争。
6) They must be able to jump high,
还必须能跳高,
参考词条