... the sun’s energy to heat water and so on. The energy can be stored for a number of days. Therefore, on cloudy days you can use it, too. Solar energy is a cheap, clean, effective source of power ... we couldn’t get seats. (so / however)10.We haven’t got a car we’ve got a motorbike. (and / but) 11. I read the book, did not understand it. (but / or)12.Which color do you want blue, red, yellow, ... connectives in brackets :1. I opened the door looked out. (and / but)2. She’s working late today she can’t come to the party. (so/ because)3. Nam’s bike was broken he borrowed mine. (so /...