He shares a room with his friend.
1.I received a letter from Susan a few days ago. I haven’t received letters from her since she left. 2. There are a lot of dirty I dishes. We haven’t washed up since morning. 3. I telephoned her after I had thought over her offer. 4. He gave up smoking after he had smoked for 20 years. 5. How long had you been engaged before you got married? 6. We have been here since 10 o'clock. 7. At last, he has finished his book. He has written it for ten years.
Are there only about 1000 wild giant pandas left in the world? Who can only be found in the mountain bamboo forests? Why don’t giant pandas live in groups? Are baby giant pandas very small or very big? Giant pandas must eat a lot of bamboo,doesn’t it?
Won't they?
doesn't he' she?
do they?
can't she?
weren't they?