come to power，sum up，most，novel，flee，commit oneself to，science，flow

（1）To

sum up

sum up

，you had better take regular exercise and stop smoking to keep healthy.
（2）The boy

committed himself to

committed himself to

be responsible for whatever he had said and done.
（3）It is said that many German artists

fled

fled

to America at the beginning of World War I.
（4）Since he

came to power

came to power

last year，he has made great effort to help the villagers become rich.
（5）The little girl felt a little lonely

mostly

mostly

because she has just moved here and has few friends.
（6）The best way to learn about nature is to explore and discover it through

scientific

scientific

methods.
（7）He first worked as a reporter and then a

novelist

novelist

who used a special way to show people's real life.
（8）They pave（鋪） some roads and parking lots to prevent the water

flowing

flowing

into the ground to become groundwater.