All communication has to be open, honest

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问题选择题

All communication has to be open, honest, and patient if a happy and healthy relationship _____.

A. will maintain
B. is maintaining
C. are maintained
D. is to be maintained

答案

答案：D

单项选择题

黄土沟间地貌主要包括______；黄土的潜蚀地貌主要包括______。( )

A．黄土墚、黄土塬、黄土陷穴；黄土碟、黄土柱
B．黄土塬、黄土碟、黄土峁；黄土碟、黄土陷穴
C．黄土墚、黄土塬、黄土峁；黄土陷穴、黄土碟
D．黄土碟、黄土柱、黄土陷穴；黄土墚、黄土塬

选择题

More than a quarter of the energy _____ in the United States goes to moving people and goods from

one place to another.[ ]

A. using

B. used

C. to use

D. use