赞题库-背景图

单项选择题

A great deal has been done to remedy the situation.

A．maintain
B．improve
C．assess
D．protect

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热门试题

单项选择题John is collaboratingwith Mary in writing an article.

A．cooperating
B．competing
C．combining
D．arguing

单项选择题Henry cannot resist the lureof drugs.

A．abuse
B．flavor
C．temptation
D．consumption