摘要：26．So many natural disasters are believed over the recent years because of the frequent unreasonable mankind activities. A．to have come about B．to come about C．coming about D．to be coming about
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So many natural disasters are believed___________over the recent years because of the frequent unreasonable mankind activities.
- A.to have come about
- B.to come about
- C.coming about
- D.to be coming about
So many natural disasters are believed___________over the recent years because of the frequent unreasonable mankind activities.
A．to have come about B．to come about
C．coming about D．to be coming about
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So many natural disasters are believed___________over the recent years because of the frequent unreasonable mankind activities.
| A．to have come about | B．to come about |
| C．coming about | D．to be coming about |