As the plane circled over the airport, everyone sensed that something was wrong. The plane was moving unsteadily through the air, and (41) the passengers had fastened their seat belts, they were suddenly (42) forward. At that moment, the air-hostess (43) . She looked very pale, but was quite (44) . Speaking quickly but almost in a whisper, she (45) everyone that the pilot had (46) and asked if any of the passengers knew anything about machines or at (47) how to drive a car. After a moment’s (48) , a man got up and followed the hostess into the pilot’s cabin. Moving the pilot (49) , the man took his seat and listened carefully to the (50) instructions that were being sent by radio from the airport (51) . The plane was now dangerously close (52) the ground, but to everyone’s (53) , it soon began to climb. The man had to (54) the airport several t
A. although
B. while
C. therefore
D. then
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