1.--I feel tired,dad.
---Be tired of?--------?
A.Since what B.For why C.Of what
2.Recently he's made another wonderful invention----- of great importance to science.
A.that i suppose it is
B.which i suppose is
C.and i suppose which it is
请详细说明理由,并翻译一下,谢谢哦
why?
追答呃,,,光打字说不太清楚