问题补充：
。
take part in look after heard of has been to enjoy yourself
【小题1】Did you on the beach last week？
【小题2】We have never the matter before．
【小题3】Han Li San Francisco in the USA.
【小题4】Sue was very happy to the game.
【小题5】It’s difficult for her to the sick boy．enjoy yourself
答案：
(答案→)enjoy yourself
解析：
【小题1】本题的含义为你上周在沙滩上玩得开心吗？故本题空格处填玩得开心的短语enjoy yourself。
【小题2】本句的含义为我们以前听说过那事，故本题空格处填听说的短语heard of。
【小题3】本句的含义为韩丽去过美国的旧金山，故本题空格处填去过某地的结构has been to。
【小题4】本题的含义为苏很开心的参加了游戏，故本题空格处填参加的短语take part in。
【小题5】本句的含义为对她而言照顾生病的男孩是男的，故本题空格处填照顾的短语look after。
