It was only when I reread his poem recently ________ I began to appreciate their beauty.

When was first robot —In 1959.

Peter believes the present his sister got is much more wonderful than his, ________— The grass is always greener on the other side.

What did shefor so much money.—Nothing but a few CDs.

一Morning, class. Is _________here today—No,sir. Tom is absent. He is ill at home.