___certain livings as birds not becausethey have long legs or short legs,but because they all havefeathers

The children love _________ computer＿＿＿．

Why do you like living in the countryside—Because there’s _______ noise and _______ cars there.

The greatest love in the world is no doubt the love of a mother; it can be _____ by nothing else.

Even if these chemicals are still in experimental stages, they _____ to be a number one hit.