a) What clothes do you like wearing? Why? b) Do you wear a uniform at school? c) What do you prefer: a suit or jeans and trainers? d) 1. (boys) On what occasions do you put a tie on? 2. (girls) How often do you wear a dress? e) On what occasions do people in our country wear national costumes?
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.