单项选择题
Mrs.Smith was much disappointed to find the washing machine she had had（）went wrong again.
A.itB.repairedC.it repairedD.to be repaired
单项选择题 The（）of blood always makes me feel sick.
单项选择题 Mrs Black doesn’t believe her son is able to design camera．（）？
单项选择题 At the conference，people of different（）were given a chance to exchange theirs with each other.
