1. When the police arrived, the robbers (go)..had gone
2. You look very thoughtful. What are you (think).....thinking........about?
3. Peter (sleep)....was sleeping ..........so he didn't understand what you said.
4. I promise I dramatically (not come) ....wouldn't come ...........home late again.
5. Recently, life in our town (change)..........had changed........
6. It (report) ....iis reported .............that thousands of visitors come to enjoy beautiful view of Binh Dai Fortress every year.
7. Did you remember (send)......send......... your CV? It's deadline this morning.
8. The students are looking forward to (receive)....receiving ......the result of the final examination.
9. Why don't you stop (work).........working ....and take a rest?
10. Radio waves (discover)......are discovered.........by Heinrich Hertz.