Past Ability: Could and Be Able To

(-) I _______ find my keys last night, so I didn't leave the house.

Answer explanation

Specific Occasion (Negative)

(-) We _______ catch the last train home.

Answer explanation

Specific Occasion (Negative)

(+) She _______ reach the airport in time, despite the heavy traffic.

Answer explanation

Specific Occasion (Affirmative)

(+) They _______ see the storm approaching from a distance.

Answer explanation

Stative Verb

(-) He _______ swim across the river when he was younger.

Answer explanation

General Occasion (Negative)

(+) She _______ speak three languages when she was young.

Answer explanation

General Occasion (Affirmative)

(+) They _______ solve complex math problems easily in high school.

Answer explanation

General Occasion (Affirmative)

(+) She _______ get a last-minute reservation at the restaurant.

Answer explanation

Specific Occasion (Affirmative)

(+) They _______ finish the project before the deadline.

Answer explanation

Specific Occasion (Affirmative)

(-) I _______ hear the music playing from across the street.

Answer explanation

Stative Verb