Changing the design of a new product may ____ the riskof its production in the market

8, three American scientists invented ____transistor, which is ____ small electronic device to control an electriccurrent

The streets here are not so ____ as those in our city.

The weather isn’t good enough for an outing, is it? — Not in the least. We can’t have __________ at this time of the year.

Could you say it again I can’t understand __________you are talking about.