Though the “No smoking” signs have existed for long in public places, heavy smokers often ________ them and light up cigarettes.

I like the sofa we’ve found in the shop. In my opinion, it is a perfect __ for the furniture in our  sitting room.

(2013·北京市西城一模)All the books ________ by the students are reported to have been sent to the children in the countryside the other day.

South Korea returned to China the remains of the Chinese soldiers killed in the Korean War,_______ the friendly ties between the two countries

These plants are watered ＿＿ .