It was a time ________ volunteers from all over the world visited this nursing home regularly.

Would you like to go for apicnic—Yes, __________.

Tom spent two years _________ his book.

下列选项中的诗句填入《天平山中》一诗画横线处，恰当的一句是（ ） 细雨茸茸湿楝花，南风树树熟枇杷。 ________，一路莺啼送到家。

The population of China is _____ than that of ______ country in Europe.