问题
选择题
He focused his effort ____the house ___sale for fear that the prices of them would go up suddenly.
A．on; for
B．on; in
C．to; for
D．to; in
答案
答案：A
题目分析：考查固定词组。固定词组focus…on…聚焦于…；for sale出售；句意：他很注意出售的房屋的价格，唯恐房价突然上升。故A正确。
点评：固定词组focus…on…聚焦于…；for sale出售；