Teenagers should ________ to take care of themselves from a young age.

ng, the headache ________ me.— No wonder, you _________ the South Korean TV soaps since last night.

In my opinion, life in the twenty-first century is much easier than _____. [ ]

_____ it was very cold, _____ my friend still went swimming in Jialing River this morning.

The terrible drought has captured worldwide attention. As responsible citizens, we must never ______ the terrible situation that our common home is faced with.