knowing something quite well - I’m sorry, I’m not f_________ w______ your poetry.

waste gas from a vehicle’s engine that comes out through a pipe - We sat in the traffic jam, breathing in the e_________ f________ from the cars around us.

effort that you make with your body - I get out of breath with any kind of p_________ e__________.

not harmed or affected by something - Some bacteria are r___________ t_____ these antibiotics.

a country with a lot of industrial activity and higher incomes - Our study covered a broad cross-section of the populations of d__________ c__________.

Thankful - I was so g____________ that the rain stopped and the sun came out.

using the newest ideas, designs, and materials - This computer system uses s_________-of-the-a_______ technology.

when you become ill if you touch, eat, or go near something. - I’m a__________ to cat fur.

something that is good enough for the function it was intended for. - The school buildings are no longer f_____ for p________.

Take and exam - Next week we will s_______ an exam on physics.

to make sure that you do not touch or come near something - Try to a_______ direct c_______ w______ any of the chemicals.

an area of countryside where fewer people live - Bus services to r_________ a_________ are very poor.

difficult to deal with or do - Racism is a t__________ subject to discuss in class.