题目内容
It worried us that the number of______(濒危的) animals was still on the decrease.
endangered
It worried her a bit that her hair_______ grey.
A. was turning B. has turned C. turns D. will turn
It worried Mary a lot__________she would pass the college entrance examinations.?
A.whether B.if C.that D.how?
It worried her a bit _____________ her hair was turning grey.
A. which B. that C. if D. for