China became the 143rd member of the WTO in 2001,thus(realiz
China became the 143rd member of the WTO in 2001,thus(realizing)its 15-year wish .
如题,为什么不可以用having realized?晤,还有一个,Jose came to borrow my skiing boards yesterday,but it happened that I (lent )them out.为什么不用have lent?