Complete the conversation with the correct form of the words and phrases above. 1. The R&D Department decided to conduct this season’s survey by means of ___________. 2. Tom has submitted a proposal to the senior management for ___________. 3. Of all the data we’ve _____________, 90% is valid. 4. Most customers have a(n) ___________ of our Item 4 over Item 5. 5. What I am concerned most is whether our _____________ are satisfied or not. 6. Before we decide to ___________ this new product, we need to ___________ that it has passed the security test. 7. The market loves our new smart phones because they find them quite ___________