英语高手进,请给出答案并简单讲解,谢谢!

英语高手进,请给出答案并简单讲解,谢谢!
1.Hardly____when a visitor came in.
A. he had sat down B. did he sit down C he sat down D. had he sat down
2.---Is there anything wrong, Bob? You look sad.
---Oh, nothing much! In fact, I _________ of my friends back home.
A. have just thought B. was just thinking C. would just think D. will just be thinking
3.At this time tomorrow __________over the Atlantic.
A. we’re going to fly B. we’ll be flying C. we’ll fly D. we’re to fly
4.Hurry up! The rope __________break soon.
A. is to B. is going to C. will D. would
5. They said that they _________drop in on us after a period of time. A. will B. are going to C. would D. were about to
6. She showed him the photo she __the day before.
A has taken B took C was taking D had taken
7. He was sixty-eight then. In two years he _____seventy.
A was going to be B would be C had been D will be
8. I'll return the book to the library as soon as I_ __it .
A will finish B am going to finish C finished D have finished
9. Peter said that he _____home the next day.
A was going to B will go C would go D had gone
10.You haven’t said a word about my new coat, Brenda. Do you like it?
---I’m sorry I ________ anything about it sooner. I think it’s pretty on you.
A. wasn’t saying B. don’t say C. won’t say D. didn’t say