You should ________ the flowers once a week.
Though I ___________ the phone number many times, the foreigner couldn’t write it down.
Edward, you have grown up. You should learn to make your own room ________.
These natural disasters have warned us that everyone should start to protect the_____ immediately.
There __________ still some milk in the fridge. It’s not necessary to go to the store today.
—__________ T-shirt do you like better, the red one or the blue one?—I prefer the red one.