Building oil rigs is a man's work开头的build为什么要用ing?

Building oil rigs is a man's work开头的build为什么要用ing? There is a total absence of fishing boats around the oil rigs.There are ______ fishing boats.选项是A.few B.a few C.no D.not 答案是C项,为什么不是D项.那位大侠来帮忙. So it comes as a surprise to learn that giant fish are terrifying the divers on North Sea oil rigs.as oil oil 这句话中,that引导的是什么从句呢?这句从句修饰的是哪个单词呢?So it comes as a surprise to learn that giant fish are terrifying the divers on North Sea oil rigs. here is so tall a building here is ----- ------tall building 那栋楼好高啊!( )( ) the building is! The building is the highest building in shenzhen.同义句 How tall is the building?____the ___ ___ the building? building A is than building B 中间填什么词 填空：Diwang Building is a f__ building in Shenzhen填空：Diwang Building is a f__ building in Shenzhen. All that is needed is supply of oil. building building building Coal and oil are most_materials for the manufacturing of plastics.A artificial B building C raw Dsolid 选哪个?为什么 repeat-induced gene silencing (RIGS)怎么翻译?