While he was investigating ways t improve the telescope Newton made _______discovery which completely changed ____ man’s understanding of color.
25.Has __________been decided when we are to hold the sports-meeting?26.
27.—Did Li Lei call me while I was out?28. —Yes, it was ____________that called you.29.
30.Nothing is wrong with the radio___________?31.
27.I don't know_____________makes her afraid of having her business discussed.
28.Which sentence is wrong?29.