_online shopping has changed our life , not all of its effects have been positive.

.He has just arrived, but he talks as if he _____ all about that.

I left my handbag on the train, but luckily someone gave it to a railway official.— How unbelievable to get it back! I mean, someone ________ it. [ ]

12______ now and then, the six-party talk on the North Korea Nuclear Issue will restart next month, ______

If more roads in the future, it will be much easier for people to travel around Xiangyang.—I agree.