20.21.What did Jack think of his last weekend? A.Busy. B.Happy. C.Tired. 22.When would Jack take a history exam? A.On September 2. B.On September 20th. C.On September 22nd. 23.What was Jack's English homework? A.To watch an English movie. B.To write a report. C.To read an English book. 24.Where is Jack's pen friend Mike from? A.America. B.England. C.Australia. 25.How long have they known each other? A.For four years. B.For five years. C.For seven years.