单项选择题
The sale usually takes place outside the house, with the audience（）on benches, chairs or boxes.
A.seated B.seating C.having seated D.having been seated
单项选择题 Beijing has reiterated that（）will China use nuclear weapons first.
单项选择题 Everything（）if Albert hadn’t called the fire brigade.
单项选择题 I don't mind（）the decision as long as it is not too late.
