appears，appears。。。。。

Richardyu

10. GWD21-Q10:

Researchers in Germany have unearthed 400,000-year-old wooden spears from what it appears was an ancient lakeshore hunting ground as stunning evidence of humanancestors who systematically hunted big game much earlier than believed.

A.it appears was an ancient lakeshore hunting ground as stunning evidence of human ancestors who

B.it appears had been an ancient lakeshore hunting ground and stunning evidence that human ancestors

C.appears was an ancient lakeshore hunting ground and is stunning evidence that human ancestors

D.appears to be an ancient lakeshore hunting ground, stunning evidence that human ancestors

E.appears that it is an ancient lakeshore hunting ground, stunning evidence of human ancestors who

appears在这里为什么会是单数形式呢？

kissingerqjq

因为appears的主语是lakeshore  hunting ground