In your sentences it should definitely be: Or who was these buildings designed by? Use were (instead of was) in statements that are contrary to fact.
美国签证表上有个问题: were you previously employed? "i have indicated in opening remarks that i do not intend to be prime ministerial candidate if the upa were to come to power after the general elections. Does were/was refer to these buildings or who?
What is the difference between were and have been, and are these sentences gramatically correct? 1) some of the best known writers of detective fiction in the twentieth century were. Who were these buildings designed by? 这个问题怎么理解? 美国签证表上有个问题: were you previously employed?
Which of the following is correct ? From other's conversation,i found out they mentioned i was and sometimes they also mentioned i were. Is there any rules for i was/were?