【简答题】There are all kinds of machines. They 21 in many different ways. One kind of machine is called a computer. A computer can do many things. A computer can do math problems. People can also do math probl...
【简答题】Many people think that Americans 21 their cars almost more than anything else. When 22__ people are four years old, they want to have their __23_ cars. They don’t ask for a car from their 24__ . S...