Sam ______ some knowledge of the computer just by watching others working on it.
Atlasttheygottheletterthey____________.
__________thetopofthepagoda(塔),thesceneryofthewholecitycanbeseenclearlyunderyourfeet.
WhenIvisitedthecityofRome,Ifoundthebuildings,squaresandparks_____________inverydifferentstyles.
Hecametothemeeting_____________hisseriousillness.
Theprofessorsaidthatyourdiscoverywas_____________.