1) Yesterday, the students ___ (clean) the park and ___ (collect) the trash. a) Cleaned, collected b) Cleaning, collecting c) cleans, collects 2) Last week, my friends and I ___ (find) a lot of plastic bottles on the beach. a) Finded b) Found c) finding 3) The river ___ very dirty last month because people threw garbage into it. a) Is b) Were c) Was 4) The volunteers ___ (take) the trash to the recycling center yesterday. a) Took b) Taked c) Takes 5) There ___ many plastic bags in the park before we cleaned it. a) Was b) Were c) Are

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