SimoneOil, exported from Iran to Europe, _____ by tankers.
的有关信息介绍如下：
Oil, exported from Iran to Europe, is transported by tankers.
【transport】解释为运送·
因为石油是被运送的，而且是不可数，所以用单数
有不会的可以再问我
Oil, exported from Iran to Europe, is transported by tankers.
从伊朗出口到欧洲的石油是通过油轮运输的
used to be transported
