Use gerunds instead of subordinate clauses. Mind the prepositions to go with the gerunds. 1. When you consider the question, don't forget to use latest information on the subject (in 2. When the delegation completed on tour over the country, on left for home (on). 3. When I heard that Mike had been taken ill, 1 agreed to substitute for him (at). 4. Before you go to visit the Parkers, make sure they are at home (before). 5. One can improve one's pronunciation if one works with a tape recorder (by). 6. You will never have a good command of a foreign language unless you learn its grammar. 7. After Prof. Lake made a few additional experiments, he obtained some new information (after). 8. The students developed their speaking skills because they practiced their English every day (through).

1. When the taxi arrived I still was packing my things. 
2. What did you do in the evening yesterday? - I was watching TV and my wife was washing up.
3. I was doing all the exercises while you was sleeping.
4. Mr Brown , where were you when they were driving your car at midnight?
5. When the clock stroke nine she was running up the stairs to her office, because the lift did not work. 
6. He was standing and watching while the boys were fighting.
7. She wore a marvellous new dress at the party and it looked fantastic!
8. He was waiting for her for an hour but she never came.
9. When the telephone rang I was baking a cake and asking Mary, who was doing nothing at the moment to answer the call.
10. Why didn`t you attend the lecture on Saturday? Professor Brown spoke about UFO and other mysterious objects.