二.单选题。(每题0.5分,共10分)
11.Standing at ___ altitude of 3000 meters , he said,” Determination plays____ important part in my success.”
A. an, a B. a, the C. the,a D.an, an
12.It is the third time that he_____ the dog in this park..
A. has walked B. had walked C. will walk D.walks
13. Tom hid Lucy’s English book ____ purpose because he was so tired ___ her.
11.Standing at ___ altitude of 3000 meters , he said,” Determination plays____ important part in my success.”
A. an, a B. a, the C. the,a D.an, an
12.It is the third time that he_____ the dog in this park..
A. has walked B. had walked C. will walk D.walks
13. Tom hid Lucy’s English book ____ purpose because he was so tired ___ her.