1. 每年两次   monsoon   week   biannual   half-yearly   Hint Half-n-half Clue   2. 每日   annual   daily   summer   fortnight   Half-n-half Clue   3. 秋天，秋天   autumn, fall   week   half-yearly   winter   Half-n-half Clue   4. 夏天   biannual   spring   summer   quarter   Half-n-half Clue   5. 星期   week   monsoon   spring   monthly   Half-n-half Clue   6. 每年   week   spring   annual   weekly   Half-n-half Clue   7. 两星期   fortnight   daily   quarterly   annual   Half-n-half Clue