根据括号内所给的中文,写出单词的正确形式。
There is no ______________(交流) between us for a long time.
What a _____________(美妙的) time the children had last summer holiday!
Uncle Tom usually____________(放松) by playing chess after a hard day’s work.
After the teacher said, “Class is __________”(结束), all the boys ran out of the classroom.