.We are living in an age ______ many things are done on computers.
28. If our car had not ________, we would have been here on time.
27. This new kind of chemicals will help keep the air, soil and water________ from pollution.
26. Barack Obama has taken personal blame ________ the security failures which led ________ the attempt to blow up a plane on Christmas Day.
24. My father didn’t have to say anything. I knew he was upset from his ________.
23. Cao Cao’s tomb is reported ________ in China, which attracts nationwide attention.