A turning point of the continuously high housing price won’t appear suddenly because there must be a certain process_______many factors lead to the change.
_______ with a difficult situation, Arnold decided to ask his boss for advice.
Halfway up the mountain we stopped to ______________.
The doctor insisted that only in this ______ could the patient survive in the operation.
He hurried to the station only _______ that the train had left.
— Are you glad to hear from her? — Of course. ___________, we last met more than thirty years ago.