odern Olympic Games was held.
—It really is. But where ?
A．that, was that B．since, was it C．after, is that D．when, is it
27．They sought to nuclear reaction chemicals but they had a long way to go.
A．break down B．break up C．break in D．break through
28．—Where’s your sister, please?
—Oh? What a pity! But it seems, so far as I know, that she you here.
A．didn’t know, were B．hasn’t known, are
C．doesn’t know, are D．hadn’t known, were
29．It was snowing heavily, and , our car had broken down.
A．what’s more B．moreover C．in addition D．to make things worse
30．—Hurry, Kitty?
—Oh, damn! Both my legs are nearly to give out. I for hours like a dog.
A．have walked B．walked &n
