The flood started and we had to_____higher ground.
| A．seek | B．search | C．discover | D．invent |
At the meeting they discussed three different ________ to the study of physics.
| A．means | B．ways | C．methods | D．approaches |
Our manager has gone to Paris, so I have to deal with all the letters during his ________.
| A．appearance | B．distance | C．absence | D．presence |
To qualify yourself for this kind of new job, I recommend that you ________ some online courses.
| A．to take | B．taking | C．take | D．would take |
I soon found that the work I was doing had already been done by someone else —________ I was wasting time.
| A．as a result | B．in the meantime |
| C．in other words | D．for one thing |
The doctor has worked with patients of this kind for eight years, so he knows what ________ in his job.
| A．expected | B．to be expecting | C．expects | D．to expect |