XI)

71.We can take our old toys to a charity 

72.We can take our old boxes, wrapping papers and greeting cards to a local school

74.We can take our old magazines to a local doctors offices

73.We can take our old newspapers to pet shops

75.We can take our plastic bags to supermakets

X)

76.When Nam was ten , he could speak English on the phone.

77.My sister could write poems when she was eight 

78.They worried that some people will use robots for bad things

79.If people plant more trees in that area, there will be no floods

80.If we recycle old newspapers, we will save a lot of labour trees (mik ko chắc vế sau của câu 80 này lắm)