_____is too hard _____ a good solution to this problem.
| A．It; finding | B．This; to find | C．This; finding | D．It; to find |
The workers spent about three years the high-speed railway.
| A．building | B．to building | C．build | D．built |
——My lovely sister is a girl and she sings very well.
| A．twelve years old | B．twelve-year-old |
| C．twelve-years-old | D．twelve-year-olds |
all the players tried their best, they didn’t win the match in the end.
| A．Because | B．Since | C．As | D．Although |
My parents advise me in that river. It’s dangerous.
| A．swimming | B．swim |
| C．not to swim | D．not swim |
------Tony asked Lucy or not.
| A．if she liked that film |
| B．whether she likes that film |
| C．if she likes that film |
| D．whether she liked that film |