People who cannot _____ between colours are said to becolour-blind.

Alice’s second-hand computer ____ wrongalthough she used it only once.—You’d better go to check it.

They asked him to tell them everything ________ he saw at the front.

I feel nervous about the coming summer.—- Me , too. Hot weather _____ makes people feelhot, ______ causes serious health problems.

How can they expect to learn anything ________they never listen?