Complete the sentences with the given words in their proper forms（用括号中所给单词的适当形式完成下列句子）：
【小题1】Looking at your phone in the darkness will do ________ to your eyes. (harmful)
【小题2】It’s her ________ time for these teenagers to visit Shanghai Disney. (four)
【小题3】I am ________ sorry for what I have done to you. (real)
【小题4】Mr Smith taught ________ English because his family was very poor. (he)
【小题5】She was ________ that the plane would crash as the plane suddenly went down. (fright)
【小题6】Plastic bags pollute the environment and they will not ________ for a very long time. (appear)