Fill in the gaps with a word built with the help

Fill in the gaps with a word built with the help of these -less, re-, -able, -proof, multi-. The words in italics will help you. Change the form if necessary. 1 Oxygen has no colour and taste, but although it is ... and ... we can sense immediately if it is missing in the atmosphere. 2 People in this area have to be .... They speak the languages of the neighbouring villages. 3 On board a spaceship in the absence of acceleration, objects and people weigh nothing. ... is one the main difficulties for astronauts. 4 We considered this question last year and made a decision. Anyway, under the pressure of the new facts we have to ... it. 5 Dont mind the water. This material is.... 6 One can observe some organic molecules through a powerful electron microscope. But, normally, molecules are not.... they are too small. 7 Don39;t worry about bad weather with these new synthetic materials. The house is completely .... 8 The waste is processed for uss. as fertilizer. The aim to make 95% of it.... 9 What if some fool presses this red button? Don39;t worry, this device is .... 10 This criterion can be applied to any research paper. In fact, it is ... to any paper which has a clearly defined purpose.