On the way to the post office, I heard some children ________the English song.

If we want to arrive at the village on time, we’d better ________.[ ]

I talked to my friend about it, and he’s __________ giving up the plan.

our city tries impatiently to change itsappearance by tearing down old buildings, more and more citizens are suggestingways to ___________ the historically important architecture

Which of these paintings was painted by thefamous artist Leonardo da Vinci _______.