填空题

It is indispensable that _____________________ (人类与自然和谐共处).

【参考答案】

human beings live in harmony with the nature
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填空题
People may make their own arrangements for a trip, or they may prefer to use the services of a travel agency.
单项选择题
A．expectedB．hopedC．likelyD．longed
A．expected
B．hoped
C．likely
D．longed
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