题目内容：

单词拼写

根据句子及所给首字母，写出空缺处各单词的正确形式。（共5小题；每小题1 分， 满分5分）

1. Go back home now, Mary. Your parents are c______ about you.

2. The mother felt very u_____ because his son failed in the final exam.

3. After returning from America, the old man s________ in Beijing.

4. I r　　　　him as soon as he came in the room, though I hadn’t seen him for years.

5. She looks young, but a__________ she’s over 50.