摘要： Great efforts to increase agricultural production must be made if food shortage avoided. A. is to be B. can be C. has been D. will be
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Great efforts to increase agricultural production must be made if food shortage _____ avoided.
- A.is to be
- B.can be
- C.has been
- D.will be
Great efforts to increase agricultural production must be made if food shortage _____ avoided.
A. is to be B. can be C. has been D. will be
查看习题详情和答案>>Great efforts to increase agricultural production must be made if food shortage _____ avoided.
| A．is to be | B．can be | C．has been | D．will be |