问题
选择题
The water level of the river has increased _________ half a meter since it began to rain 7 days ago.
A．on
B．for
C．in
D．by
答案
答案：D
考查固定搭配. Has/have increased by…增加了…….所以选D。
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The water level of the river has increased _________ half a meter since it began to rain 7 days ago.
A．on
B．for
C．in
D．by
答案：D
考查固定搭配. Has/have increased by…增加了…….所以选D。