Complete the gaps with: can, can't, may, might, should. There can be more than one answer. 2. When the doors open, you get off the bus. 3 You always buy your ticket in advance. It's my advice. 4. They cancel the flight because of the storm, but we don't know yet. 5. I have a ticket for the number 10 bus? 6. We go early to the station. It's a good idea. 7. I park my bike there. It's for cars only. 8 you tell me when the bus arrives, please?
Of course they looks ugly, but they make useful things such as collecting rubbish. But also this insects have disadvantages too and this disadvantages are really very serious! The mail problem of them it's their ability to spread infections.
In conclusion i want to add that we need to overcome problems which connected with insects, but we mustn't kill them, because insects also make a lot of usefull things for us.