问题
选择题
If we can keep _____ this speed, we'll arrive there in two or three hours.
A．on
B．to
C．up
D．at
答案
答案：C
keep to 遵守，keep at 继续、坚持；keep up 保持
搜题请搜索小程序“爱下问搜题”
If we can keep _____ this speed, we'll arrive there in two or three hours.
A．on
B．to
C．up
D．at
答案：C
keep to 遵守，keep at 继续、坚持；keep up 保持
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