an experiment is being carried out by them可以吧being去掉吗,为什么

an experiment is being carried out by them可以吧being去掉吗,为什么 The project is being carried out和The project is carried out有 The computer being used by them is very fast. trust is being put in them里的being为什么不改成been? the girl you considered being honest为什么要去掉being “四年计划将执行” 要用被动态吗?A plan of 4 years will be being carried out being 为什么用being? Being Single is better than being in an unfaithful relations is being repaired by my friend The thief is being （）by police It is now being sent to his home by train.这句话里为什么要加being?能不能 the policy being carried out in job enables women to enjoy t