— A lot of things. ____________, we can use it to wash our cars easily.

    Plenty of people dream of going to Mars(火星).different from those people, 16- year- old Alyssa Carson has been working(happy) for that dream since she was at the age of 4, according to a news report which was made by the BBC a few years(before).

    Alyssa tells the BBC, "I hope(go) to Mars because it is a place that no one has been to before. I want(take) the first step." According to the BBC, she has attended the USA's three world space camps so far.

    Her father, Bert Carson, tells the BBC that Alyssa plans to be on the first long journey to Mars, which is expected to take place inyear of 2033. "We are proudher," he says. "We have the next sixteen(year) planned out. "One of those plans is Alyssa attending the International Space University.

    Of course, Alyssa's dream may come with(big) sacrifices(牺牲)than others. If Alyssa goes to Mars, maybe it is very(difficulty) for her to return to Earth. Still, her father says, "If that's the only choice she has, she still wants to go." Alyssa agrees.

He invented the light bulb.

He wrote many well- known symphonies.

— I don't know. I'd invited everybody. However, only two people came.