—Has Sam finished his report?—I have no idea. He _______ it in his office the whole morning.
The songso beautiful. I really like it.
Jason was ill yesterday, __________ he didn’t go to school.
— _________ will the concert start? — In about five minutes.
Beijing, the capital of China, is one of _________ cities in the world.
You ________ cross the road when the traffic lights are red.