It is reported that people throw _______ plastic bags along this street every day.
--- Let’s do something for our dad. --- Good idea. We should always _________ father’s love for us.
---There are a lot of _________ of bike riding. ---I agree. It’s good for the environment and it saves money.
--- A study shows that good habits play a very important _________ in children’s education. ---I think so.
---Have you watched the TV report about MERS? ---Yes, it’s _________ new dangerous disease(疾病).
---Do you know when is _________ No Tabacco(烟草)Day? ---It’s May 31st.