We always deliver within 2 days if the product [ ] in stock (to be) [ a) will be b) is c) would be ]	isWe will be making some progress in negotiations if all [ ] according to our estimates (to go) [ a) went b) goes c) will go ]	goesIf our sales team [ ] how to sell our products better, we would certainly increase our market share (to know) [ a) knew b) had known c) know ]	knewIf I [ ] English fluently, I'd now be learning German (to speak) [ a) spoke b) had spoken c) speak ]	spokeIf they [ ] raw materials in time, then who is responsible for delays? (to supply) [ a) had supplied b) supplied c) supply ]	supplied