The children _____ a PE class on the playground when it
| The children _____ a PE class on the playground when it suddenly began to rain. |
| [ ] |
| A. have B. had C. are having D. were having |
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你能帮帮他们吗
| The children _____ a PE class on the playground when it suddenly began to rain. |
| [ ] |
| A. have B. had C. are having D. were having |
你能帮帮他们吗