It is a common theme in many fiction stories that the world may one day be by insects.
China is one of the countries ________ the Mekong River flows.
He was _________by his colleagues though he himself didn’t think he had done anything special.
It was reported that a chemical factory________ last night, which killed thirty workers.
The exhibition is well worth ________ and you can see fancy vases of different dynasties on show there.
Only when he reached the tea-house _________ it was the same place he’d been in last year.