The problem has _____ simply because you didn’t follow the instructions in the handbook. [ ]

t they climbed up the mountain，on the top of whichanold temple dating back to 1,500 BC.

I think a computer’s memory is the same as human’s________ . but it’s also very different.

I was surfing the Internet my brother was doing his homework.

________ do you stay at home at weekends— Ten hours.