The boys are doing no harm; they are ___ playing.
__________thetopofthepagoda(塔),thesceneryofthewholecitycanbeseenclearlyunderyourfeet.
WhenIvisitedthecityofRome,Ifoundthebuildings,squaresandparks_____________inverydifferentstyles.
Hecametothemeeting_____________hisseriousillness.
Theprofessorsaidthatyourdiscoverywas_____________.
Theaccidenthas_____________tobeagoodthingafterall.