By nine o’clock，all the Olympic torch bearershad reached the top of Mount Qomolangma，________appeared a rare rainbow soon.

下列选项中既是英语字母又是英语单词的是______。

Bob never does his homework Mary. He makes lots of mistakes.— Because he spends time doing his homework.

Our boss is very ________，so we have to arrive on time，or we would be fined.

When he reached the finalline,everyone_____laughing.