1. With ______ successful launching of Tiangong-1, China's space dream has taker ______ step closer to reality.
A. the; a B. /; a C. a; the D. the; /
2. Not only John and Tom but also their sister, Mary, _____ great interest in the piano lessons.
A. take B. takes C. have taken D. had taken
3. Hiring agency nurses from the UK cost the States ______ using local staff last year, the health minister says.
A. twice as much as B. as much as twice C. as twice much as D. as much twice
