Fill in the blanks with if, even if or unless.1. David will

Fill in the blanks with if, even if or unless.
1. David will come .. you invite him
2. Ton wont know about the party .. you tell him
3. Clive hates parties and wont come .. you invite him
4. This is too bad job. We wont finish it on time .. we start right away
5. They wont finish this job on time . they start right away, so lets get down to work