Hi, Matt! How about watching video tonight? - OK. If I (have) time, I (come). Kate, if you (eat) too many of those sweets, you (be sick).
If I (study) harder at school, I (become) a doctor.
If I (be) you, I (apply) for the job.
If you (not/lose) the key, we (not/be) stuck outside now.
If I (have) enough money, I (buy) my sister a new phone.
Why is Sally so sad? - She (be) happy if her friends (come).
If it (rain) tomorrow, ….. you (go) to the park?
If you (inset) a coin, the machine (start) working.
Suppose, the film was great! If I (feel) better, I (go) to the cinema with you.
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.