برای بخش دوم
1_ My brother went to the library, but he didn't study at all.
2_ During the last five years a lot of workers employed.
3_ The girl wrote a letter, didn't she?
4_ Were camera and light bulb invented by scientists?
چهارمی رو شک دارم اگر چیز دیگری هست لطفا برام بنویسید.