Humans are destroying nature day by day, _____of course, will cause punishment sooner or later.
------ I heard that there were a lot of shouts and screams at yesterday’s party.It must have been terrible. ------- Oh, no.________ , I enjoyed every minute.
Suspecting the traveler of carrying drugs, the Customs official stopped him and ______ suitcase, but found nothing at all.
The old professor told us that every part of the materials should be made use of _____ the station.
Safety in school has been of great concern because of frequent reports about accidents _______ students got injured or killed while in school .
----- Have you seen your nephew lately? ------ Yes, in fact, I saw him yesterday.I ______ him for three years.