1.
1) was singing
2) had been teaching
3) had been walking
4) had won
5) invented
6) had bought
2.
1) was washing
2) did
3) had crashed
4) had been playing
5) had cleaned
3.
1) They visited the British Museum last week.
2) I was reading an interesting book when a friend of mine phoned me.
3) By the time I arrived at the station, the train had left.
4) I had been learning English for two years before I visited England.
Health is the most important thing in life! There are several types of health, for example:the health of the body,mind and soul even!!! It is impossible to forget healthier,as it too is not forever. Learn the health. We only need to do in the morning charging,clean teeth(wash),to adhere to the day and not to be lazy! If you monitor the health,'ll be strong,clever,courageous.