Could was were able to exercises. Will be able to модальный глагол. модальные глаголы could be able. will be able модальный глагол. can be модальный глагол.

Could was were able to exercises. Will be able to модальный глагол. модальные глаголы could be able. will be able модальный глагол. can be модальный глагол.
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