1．Liu Huan is a pop s          ．I enjoyed listening to his songs． 

2．Don’t w         about your son．I’m sure he can look after himself．

3．I like hamburgers, because they are d        ．

4．We had an English t         yesterday and I got full marks． 

5．How do your family s         the weekends? 

6．This question is a bit difficult．Please d        it with your partner． 

7．There are t         solar terms（節(jié)氣）in a year．