28．The Chinese people are looking forward to the first attempt on the moon after Yang Liav

问题补充：

28．The Chinese people are looking forward to the first attempt on the moon after Yang Liavei’s successful trip into space.

A. landing

B. landed

C. land

D. to land

答案：

A. landing

B. landed

C. land

(答案→)D. to land

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