问题：
My computer broke down. Luckily it was still under_______________,so I got it repaired free of
charge.
[ ]
A. guarantee
B. construction
C. control
D. consideration
My computer broke down. Luckily it was still under_______________,so I got it repaired free of
charge.
B. construction
C. control
D. consideration
charge.
[ ]
A. guarantee B. construction
C. control
D. consideration
参考答案：