Super Crazy In English

Quiz No 2. from Cambridge Grammar Book. ( I will post the answers in comment box later)

1.When you write your essays ______________(mustn’t/don’t have to /have to )copy ideas from box without referencing them properly.

2.I am aiming _________(on /for /to )a band seven in IELTS.

3Do you have any knowledge ____________(of /on/ for) how our education system works?

4.In the past with you a lot of our kitchen waste away, but today many items such as plastic bottles and newspapers ______________(are recycled /recycle /need recycling).