THEY CANCELLED ALL FLIGHTS BECAUSE OF FOG.A. ALL FLIGHTS WERE CANCE...

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They cancelled all flights because of fog.A. All flights were cancelled because of fog.B. All flights because of fog were cancelled.C. All flights were because of fog cancelled.D. All flights were cancelled by them because of fog.People should send their complaints to the head office.A. Complaints should be sent to the head office.B. Complaints should be send to the head office by people.C. Their complaints should send to the head office by people.D. Their complaints to the head office should be sent.