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study
housing
free-time activities
environment
冲关2: 大家来”说说”---最佳表达
Study
Word bank
get good grades
help with
homework
test
Internet
...
Housing
apartment
space station
sea
robot
other planets
…
crowded
polluted
pollution
fresh air
tall buildings
public transportation(公共交通)
exercise
spend time with
take up a hobby
healthier