Our headmaster accepted the suggestion by students.

Peter must be ill.It’s the only thing that can ________ his strange behavior.

Have you got any particular plans for the coming holiday? —Yes.________，I’m going to visit some homes for the old in the city.

Tough __________ the task was, we _______ finish it ahead of time and therefore we were highly praised for it.

House owners keeptheir gardens in a neat and orderly state according to the regulations