Dr Brown has the habit of _____ the room when he is thinking about something troublesome.
| A．pacing | B．stepping | C．walking | D．marching |
I have little doubt about his competence; ______, he is well-qualified for the job.
| A．although | B．because | C．moreover | D．yet |
We will ______ all the natural resources if we continue consuming them like that.
| A．run out | B．wipe out | C．drop out | D．hold out |
The village has developed a lot ________ we learned farming two years ago.
| A．when | B．which | C．that | D．where |
The kitchen is often the busiest room in a household, so it’s important to make sure it _____well.
| A．smoothes | B．functions | C．pays | D．measures |
______ label to each of the trees, with detailed introduction of their features, and visitors will know more about them and how to protect them.
| A．To attach | B．Attach | C．Attached | D．Having attached |