单项选择题
A．Bob is too tired to study any more. B．He told Bob not to study late at night. C．He had often advised Bob to prepare earlier. D．Bob didn’t hear the warning.
A．It is the effect of the heat on the objects atoms. B．They move out of their usual places. C．Its atoms move too fast. D．Atoms hold together and give the object its shape.
A．Steve looks good in anything. B．He knew someone who looked like Steve. C．He wishes he had a tie like Steve’s. D．Steve should wear the old tie.