It ______ me two hours to find your new house.
| A．cost | B．took | C．spent | D．used |
Young people should go ____ working conditions are difficult.
| A．in which | B．which | C．that | D．where |
On a peaceful summer day, he went to swim in the sea _____.
| A．at the first time | B．for the first time |
| C．the first time | D．in the first time |
Those who have trouble _____ can grow crops vertically on trellises.
| A．bending | B．bent | C．bend | D．to bend |
An excellent company is good at providing its employees and co-workers with a ____which makes them feel at home.
| A．sense of humor | B．sense of accomplishment |
| C．sense of direction | D．sense of belonging |
It is _______ that you understand what type of soil you have in your garden before you can take steps to improve it.
| A．expressive | B．essential |
| C．popular | D．beautiful |