Ⅱ. 根据句意，从括号内选择恰当的单词填空。
【小题1】Last month my brother spent _________(fewer / less) time playing computer games.
【小题2】You should drink _________(more / less) water. It's good for your health.
【小题3】There will be _________(fewer / less) fishes in the lake because of the polluted water.
【小题4】Now ________(more / fewer) children are learning English. They think it's useful.