Write the first conditional sentences.
1) if / we / recycle / paper, plastic, and glass / there / be / less rubbish
2) unless / they / bring / some snacks / we / not have / enough food
3) if / you / work hard / you / be / successful
4) extreme weather / get / worse / if / we / not stop / climate change
5) if / they / not pay attention / in class / the students / not know / what to study
6) I / lend / you / money / if / you / need / it
7) if / Marika / not get / better qualifications / she / not find / a good job
8) we / not / get to / this cave / unless / we / have / a map