作业帮while we were waiting to land ,an airhostess told us to keep calm and to get off the plane quietly as soon as it had touched down.while we were waiting to land ,an airhostess told us to keep calm and to get off the plane quietly as soon as it ___ ___
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while we were waiting to land ,an airhostess told us to keep calm and to get off the plane quietly as soon as it had touched down.while we were waiting to land ,an airhostess told us to keep calm and to get off the plane quietly as soon as it ___ ___
while we were waiting to land ,an airhostess told us to keep calm and to get off the plane quietly as soon as it had touched down.
while we were waiting to land ,an airhostess told us to keep calm and to get off the plane quietly as soon as it ___ ____同义句
while we were waiting to land ,an airhostess told us to keep calm and to get off the plane quietly as soon as it had touched down.while we were waiting to land ,an airhostess told us to keep calm and to get off the plane quietly as soon as it ___ ___
had landed