6,有一题,A scientist currently works on a investigation of ..... A.currently works on a investigation of B.'s current work on the investigation of(这一项有点不确定) C.works on a investigation, which is D.也是有个which从句的项但是这个项多了个谓语。
6,有一题,A scientist currently works on a investigation of ..... A.currently works on a investigation of B.'s current work on the investigation of(这一项有点不确定) C.works on a investigation, which is D.也是有个which从句的项但是这个项多了个谓语。