Default Default Default One Question Per Page false false Why were there no buses yesterday? Maybe it was the snow or they _____ been on strike. 2 must have might have couldn't have You _____ seen her, surely! She was standing right in front of you. 1 must have might have can't have Let's ask at reception to see if they have your keys. Someone _____ found them. 2 must have might have can't have He _____ gone to Russia. He didn't have a passport. 3 must have might have couldn't have I explained the homework but she did the wrong page. She _____ misunderstood me. 1 must have may have can't have Oh no! My phone's not in my bag. I _____ left it at home. 1 must have can have couldn't have It is still a mystery how the robber gained access to the bank. Police are investigating whether the suspect _____ known one of the employees. 2 must have may have couldn't have I _____ left my wallet in the restaurant. I paid for the taxi home afterwards. 3 must have could have can't have https://339efcb25eb75e967b0d-ff8eeadd950d51fd1fc939dca75b3973.ssl.cf1.rackcdn.com/assets_default.swf