1. He felt ashamed by his carelessness for having taken someone else’s bicycle. A B C D 2. The most effective measure increasing production is to mechanize farming. A B C D 3. Oil slicks, chemical waste, garbage are common _________to our environment. (POLLUTE) 4. All the _________ in the debate had an opportunity to speak. (PARTICIPATE) 5. Traveling to America, Bell demonstrated his invention to the public at _____ exhibitions. (COUNT) 6. He stayed home because he got a cold. -> He came down ............... 7. I find it hard to go at the same speed as my husband on walking holidays (up) -> I find it hard to …………………………………………….my husband on walking holidays. 8. I’ve finally started sorting our my postcard collection. (round) -> I’ve finally ………………………………………….sorting our my postcard collection.