that ? if ? whether ? When two people in conversation, the speaker will only look at the listener from time to time, in order to make sure _____ the listener does pay attention to what he or she is speaking. -------------------------------------------------------------------------------------------------- Would you please tell me what I should fill in the blank and why?

Would you please teach me when I should use "is" and when I should use "are" after a "and"? There's an question in my examination: "Ma said that the tourists opened up a new world for him because everything they said and did ___ so different from what had been taught at school and by his parents. A.is B.are C.was D.were" ( Ma is a Chinese guy. His full-name is Ma Yun, who founded Alibaba. ) I chose C, but it should be D. I thought that both "everything they said" and "everything they did" are singular nouns ( because "everything" is a singular noun ), so we should use "is" or "was" but not "are" or "were". But it seems that I was wrong. Could you tell me what is the correct usage of "is" and "are" after "and"?Sorry, I made a big mistake. I chose D but my teacher said it should be C. I just asked my teacher, he said: "In 'everything they said and did', the subject is 'everything', so it is 'everything THAT they said and did', where 'everything' is singular. So 'everything they said and did' is singular." My description seemed misleaded Jmat. "everything they said and did" means "everything THAT they said and did" but not what I said " 'everything they said' and 'everything they did' ". Please accept my sincere apology. Regards, Yan

Would you please tell me what do "Voor Petra en Cindy" mean? Sorry, is it French? ================================================================ French Question Version: Dites-moi s'il vous plaît qu'est-ce qui fait 'Voor Petra en Cindy' moyen ? Désolé, est-ce que c'est le français ?