1) I __________________ (swim) very fast when I was younger. (past ability) a) could swim b) can swim 2) You _________________ (eat) more vegetables to stay healthy. (advice) a) should eaten b) should eat 3) They _______________ (run) 5 kilometers without stopping. (ability) a) can run b) can ran 4) I _________________(play) the piano beautifully after years of practice. (be able to) (present ability) a) am able to play b) is able to played 5) We _____________ (not hear) anything from the basement last night. (past ability) a) could hear b) couldn't hear 6) You _______________ (finish) your homework before going out with friends. (advice) a) should finish b) shouldn't finish 7) She ________________ (ride) a bike when she was five years old. (past ability) a) couldn't ridden b) could ride 8) He _____________ (not fix) the computer by himself yesterday. He will try again (be able to) (past ability) a) wasn't able to fix b) weren't able to 9) They _____________ (cook) a delicious dinner for their guests. (ability) a) can cook b) could cook 10) You ___________ (study) harder if you want to pass the exam. (advice) a) shouldn't study b) should study 11) I ______________ (not lift) this heavy box on my own. (ability) a) cannot lift b) couldn't lift 12) He _____________ (not read) when he was only three years old. (could) (past ability) a) couldn't read b) could read 13) She _________________ (not attend) the meeting because she had another commitment. (be able to) (past ability) a) was able to attend b) was not able to attend 14) We ______________ (solve) the problem now that we have the right tools. (be able to) (present ability) a) are able to solve b) were able to solve 15) You _______________ call your parents more often to check on them. (advice) a) should call b) shouldn't call

Modal verbs: Can, Could, Should, and Be able to.

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