单项选择题

These programmes are of immense value to old people()

A. natural
B. fatal
C. tiny
D. enormous

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单项选择题

I had some difficulty in carrying out the plan.()

A. making
B. keeping
C. changing
D. implementing

单项选择题

He is determined to consolidate his power().

A. strengthen
B. control
C. abandon
D. exercise

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