Tick the correct sentences. Sometimes both sentences are correct. When I was in the Science club at school,... 1 a we met every Thursday at 4 p.m. b we used to meet every Thursday at 4 p.m. 2 a we watched videos about great discoveries. b we used to watch videos about great discoveries. 3 a one week, a physicist came to speak to us. b one week, a physicist used to come to speak to us. 4 a our group went on a trip to the Science Museum in London. b our group used to go on a trip to the Science Museum in London. 5 a my friend Emma once gave a talk about the sun. b my friend Emma once used to give a talk about the sun.