This flashcard tests the correct preposition 'for' to indicate a duration of time in the present perfect continuous tense: 'for'.
Han estado estudiando en la biblioteca todas las noches ... los últimos meses.
| Question | They have been studying in the library every night … the last months. |
|---|---|
| Title | 1643 |
| QType (0=kprim,1=mc,2=sc) | 2 |
| Q_1 | since |
| Q_2 | until |
| Q_3 | for |
| Answers | 0 0 1 |
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