By the middle of the 21st century , the vast majority of the world’s population ________ in cities rather than in the country.
--Don’t you think that was a ______ night? --Yes, we were almost ______ to death by the shaking of the earth.
He told me it was the reason _______ he explained just now _______ made him come late yesterday.
The number of smokers in China ________ decreased in recent years.
The foreigner was talking to the children in the park ______ he was familiar with them.
Frank ______ London by train which ________ at 8:30 next morning.