Scientists have tried very hard to find a cure for AIDS.

-> Enormous             

Success depends on hard work.

-> The harder_{.................................................................................................................................................................}

Peter hasn’t had his hair cut for over 3 months.

-> It is over_{......................................................................................................................................................................}

Robert is sorry now that he didn’t accept the job.

-> Robert now wishes_{................................................................................................................................................................}

I saw a TV programme last month, which was very similar to this one. (bears)

-> This TV programme _{……………………………………………………………………}the one I saw last month.