---It’s a pity that the trees are going to die.---_____ more attention, they could have grown better.

Taking a trip abroad is certainly good for old couples, but it remains ____ whether they will enjoy it.

Comparison may make something appear more beautiful than it is when ______ alone.

The detective, ________ to read a newspaper, glanced at the man ________ next to a woman.

-- Isn’t it time you _____ down to _______ your own things? --- I’m sorry for the delay, Dad.