How long may I the story books?
—Has Sam finished his report?—I have no idea. He _______ it in his office the whole morning.
You may go fishing if your work _______.
Follow your teacher’s advice, _______ you’ll make great progress in your English.
You _______ write the poem down. Our teacher will give us a copy.
Knowing how to _______ a map can help you when you are travelling in a strange place.