Most of the world’s rice is grown in the tropical _______.
They had a pleasant chat ________ a cup of coffee.
Sarah, hurry up. I’m afraid you won’t have time to ________ before the party.
— How can I wake up so early? — Set the alarm at 5:00 am. ________ you will make it.
— Has Sam finished his homework today? — I have no idea. He ________ it this morning.
You can come here to ask me ________ if you have any questions.