Choose the correct modal verb to complete each gap in the following discussion.
A: The material for this have todoesn't have tocan'tcanshouldn't (2)couldshouldmustn'tmustshouldn't (1) be very strong. We don’t want it to break while people are carrying it around.
B: That’s right. We have todoesn't have tocan'tcanshouldn't (2)couldshouldmustn'tmustshouldn't (1) use metal because it’s too heavy.
C: Yes I Agree& If we use a strong plastic, we have todoesn't have tocan'tcanshouldn't (2)couldshouldmustn'tmustshouldn't (1) make it in lots of colours and it’s also possible to make a rectangular shape.
A: Why rectangular? It have todoesn't have tocan'tcanshouldn't (2)couldshouldmustn'tmustshouldn't (1) look like all the competitors’ designs, does it? I think we have todoesn't have tocan'tcanshouldn't (2)couldshouldmustn'tmustshouldn't (1) try to come up with something new. We have todoesn't have tocan'tcanshouldn't (2)couldshouldmustn'tmustshouldn't (1) make circular players, for example, or star-shaped players.
B: True, but we have todoesn't have tocan'tcanshouldn't (2)couldshouldmustn'tmustshouldn't (1) produce something which people have todoesn't have tocan'tcanshouldn't (2)couldshouldmustn'tmustshouldn't (1) easily carry. The classic rectangular shape works because it’s easy to put in your pocket.
C: Well, we have todoesn't have tocan'tcanshouldn't (2)couldshouldmustn'tmustshouldn't (1) design a few versions and test them on consumers.
A: No, we can’t because we don’t have enough time before the launch next spring.
B: I know, but we have todoesn't have tocan'tcanshouldn't (2)couldshouldmustn'tmustshouldn't (1) launch it until we’re ready otherwise it won’t sell.