课后题：
1. Here's my card. Let's keep in ____.
A. touch B. relation C. connection D. friendship
2. The manager has fallen asleep where he ____, without undressing.
A. was laying B. was lying C. had laid D. had lied
3. It was obvious that the matter had never ______.
A. paid attention B. paid attention on C. been paid attention to D. pay attention
