問題詳情:
用所給詞的其適當形式填空:
1. On his ________ (twenty) birthday, he went to the museum with his parents.
went _________ ( sail ) in Hainan Island last summer.
has already _________ (forget) his English teacher’s name.
are going to take a direct _______ ( fly ) to New York.
r ______ ( pollute) is one of the biggest problems in the world now.
【回答】
twentieth 2、sailing 3、forgotten 4、flight 5、pollution
知識點:構詞法
題型:完成句子