O-Net 2021

Dialog1 : On Loy Krathong Day
Joy : It's Loy Krathong Day isn't it?
Tim : _1_ It's time to celebrate. _2_buy a krathong
made of bread and float it in the canal?
Joy : Do you think that's a good idea _3_we should not
do that because it pollutes the water.
Tim : _4_ Krathongs made of bread are food for fish.
Joy : _5_ humans are the major cause of environmental
destruction. Let's celebrate online instead.

What is the most suitable answer for _3_?

1. It's a pity
2. In case
3. How come
4. In my opinion,
5. With a doubt,

Answer: 4. In my opinion,