The policeman came up to the lonely house with the door open, ________ there for a while and then entered it.
I have learned a lot about Asian customs, ______ in the small village for three years in the early 1990s.
When he discovered that it was all ______ joke, he laughed so hard that he nearly fell to _____ ground.
— It was great to see you again. — ______ .
— Are you sure the delegation will come to our school next week? — ______. The head of it has just emailed me about the departure time of their flight.
The findings support another study which showed that being happy ______ reduce the risk of heart disease.