Complete each of the following sentences using the words given

IX. Complete each of the following sentances , using the words given.
1. If / it / not rain / tomorrow / I / go / camping / my friends.
2. If / I / meet / alien / outer space / I / invite / home / talk.
3. I / never / travelled / by / air.
4. The students / study / for exam / now.
5. It / be / such / cold day / we / decide / not / go out.