1) You ____________ park here. It's forbidden. (negative possibility in the present) a) can b) can't c) could d) couldn't 2) Sam __________ go to the party because he was too busy. (negative possibility in the past) a) can b) can't c) could d) couldn't 3) He doesn't have a racket, so he __________ play tennis. (negative ability in the present) a) can b) can't c) could d) couldn't 4) _____________ you ride a bike when you were seven years old? (question about positive ability in the past) a) can b) can't c) could d) couldn't 5) Pamela is a ballerina, so she ____________ dance very well. (positive ability in the present) a) can b) can't c) could d) couldn't 6) They ______________ see the lunar eclipse yesterday. (positive ability in the past) a) can b) can't c) could d) couldn't 7) When my sister was younger, she ____________ speak English. (positive ability in the past) a) can b) can't c) could d) couldn't 8) I looked everywhere but I _______________ find my keys. (negative possibility in the past) a) can b) can't c) could d) couldn't 9) ______________ dinosaurs fly? (question about positive ability in the past) a) Can b) Can't c) Could d) Couldn't 10) If you are hungry, you ________ eat an apple. (positive possibility in the present) a) can b) can't c) could d) couldn't

Can / can't / could / couldn't

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