问题
Mary was only too ready to help others, seldom, _____, refusing them when they turned to her [ ]
A: if never
B: if not
C: if any
D: if ever
B: if not
C: if any
D: if ever
正确答案是：
同类题型
Bill usually gets up _______ six thirty _______ the morning.
My father watches the CCTV news_________________________8 p.m. and 9:30 p.m. every day.
did you finish your homework— I finished it at 9:00 last night.
out ______lecture you attended last night—It was too boring , indeed ,____lecture for me.