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91, Nga wanted to know if Mary enjoyed Tet festival in Vietnam.
92, I gave my children a key so that they could get into the house themselves.
93, Wastes should be recycled or natural resources will run out in the future.
94, We must protect green trees because we can’t live without them.
95, Vietnamese people usually smile instead of saying “thank you” when getting praises.
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96, Homes in the city are often better equipped with electrical appliances than those in the countryside.
97, Tipping is not a custom in Viet Nam so you do not have to tip if you don’t want to.
98, I have not talked to my uncle since he bought a new house in the city center.
99, You should participate in programs such as raising funds for the poor to help street children or planting trees along the sidewalks.
100, Recycling helps save raw materials and protect nature habitats for the future.
