Choose the correct option

The doctor ... on the operation again, though not strongly this time.

• warns
• is warning
• insists
• is insisting

By signing this paper, you ... all the terms of using this application.

• agree
• are agreeing
• are accepting
• accept

David ... more guests than his house can actually accommodate.

• is inviting
• invites
• is receiving
• receives

We are leaving now but we ... that we are coming back soon.

• are promising
• promise
• declare
• are declaring

I don't think the time is ripe and I ... any concrete solution.

• do not propose
• am not proposing
• do not offer
• am not offering

I ... we wait and see which way the cat jumps.

• am suggesting
• suggest
• propose
• am proposing