| Idx | 0677 |
|---|---|
| Keyword | concern |
| Sub Entry Number | 2 |
| Type of Sentence | ✗ |
| Error Sentence | There are far more serious things to concern about. |
| Correct Sentence | There are far more serious things to be concerned about. |
| Cloze Error Sentence | There are far more serious things to [[concern]] about. |
| Cloze Sentence | There are far more serious things to [[be concerned]] about. |
| Cloze Answer | be concerned |
| Choices | concern | be concerned |
| Explanation | be concerned about sth (= be worried or anxious): 'The government is becoming increasingly concerned about the rising level of unemployment.' 'The manager is naturally very concerned about the recent spate of injuries.' |
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