隧道开挖应采用干式凿岩，喷混凝土尽量采用湿喷工艺
参考答案：对
1. to (同音词) ____________ 3. buy (同音词) ____________ 5. good (比较极) ____________ 7. run (现在分词) ____________ 9. make (现在分词) ____________
It ______ me five minutes to walk to school. [ ]
A. spends
B. takes
C. costs
D. has
