---At present, one of the best ways to study is working in groups.
---More chances ___________ to students to learn from each other.
| A．offer | B．are offered |
| C．have offered | D．are offering |
---At present, one of the best ways to study is working in groups.
---More chances ___________ to students to learn from each other.
| A．offer | B．are offered |
| C．have offered | D．are offering |
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