1) It's the simple past of can a) Can't b) Could c) Couldn't 2) It's the simple past of can't. a) Could b) Can c) Couldn't 3) When I was a child I ride a bike, that's why I have a bike. a) Could b) Couldn't c) Can 4) It's the correct sentence for: Yo no podìa nadar. a) I could swim. b) I can swim. c) I couldn't swim. 5) Can is the simple past of could. a) Correct. b) Incorrect. 6) Can't is the simple present of couldn't. a) Correct. b) Incorrect. 7) I couldn't cook today. a) It's a positive sentence. b) It's a negative sentence. c) It's a question. d) They all are incorrect. 8) It's the correct sentence for: Ellos podìan comer su comida. a) They can eat their food. b) They could eat their food. c) They can't eat their food. 9) We use could only for positive past abilities. a) Correct. b) Incorrect. c) Both of them. 10) We use couldn't only for negative present actions. a) Correct. b) Incorrect.

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