| Id | 0686 |
|---|---|
| Category | Modals |
| Unit | Unit 28: Must and can't |
| Rubric | Complete the sentences with the correct form of the verb. If more than one form is correct, choose both. |
| Question | The library must be closed. Nobody's answering the phone. |
| Choices | can't be;must be;couldn't have been |
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