Gradually the waves that break on the shore wash away the land.()

A．The mine workers demanded that there should be breaks for food.B．The mine owners had

They waved the white flag as a ______ that they wish to surrender.A．markB．signalC．signD．ge

The speed of radio waves is equal to ________of light. A. those B. that C. the one D. t

Why does Dr Povey say the fact that light waves can not penetrate walls is a bonus？A．Becau

It is during summer breaks that we first taste the satisfaction of work that ______ into h

We are pleased to_________ you that we are interested in the Wave Radio and the CD adv