| Task | Carol is very ill. She _____________ take medicines every day. |
|---|---|
| Answer | 3 |
| a | can |
| b | may |
| c | must |
| d | might |
| comment | We use the modal verb 'must' when we talk about duties or when it is necessary to do something. |
| topic | modal verbs |
| level | 1 |
Tags: 487
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