.—How _______the frog(雾) is! We can’t see clearly while riding.

She was so angry at _______ he was doing ______ she walked out, and closed the door heavily behind her.

Simon improved his way of study. ________, he has made great progress [ ]

I think he draws very well. _____ he is only 4 years old. [ ]

Nobody helped me. I finished it by _________.