--Where is Xiao Wang? --I don't know. He__________ be in the library.
—Do you think our basketballers played very well yesterday?—__________.
__________, I managed to get through the game and the pain was worth it in the end.
The speaker told a joke or story __________ when he gave the talk to keep us interested.
He is very popular among his students as he always tries to make them __________ in his lectures.
To their great relief, the missing child returned home,__________ after an absence of two weeks.