WhenwasithefoundhethoughtwasthecorrectwaytosolvetheprobleWhenwasithefoundhethoughtwasthecorrectwaytosolvetheproblem?A.that;whatB.that;thatC.when;whatD.when;that

Question

When was it______ he found ______ he thought was the correct way to solve the proble
When was it______ he found ______ he thought was the correct way to solve the problem?
A.that; what
B.that; that
C.when; what
D.when; that

Answer 1

选A,第一空为定语从句,代后面这句话（可省略）第二空为宾语从句,做found的宾语,应为what