It is because people are likely to stay indoors ______ the virus can spread easily ______ people often catch colds.
| A．and, that | B．so, that | C．therefore, so | D．that, that |
He is very popular among his students as he always tries to make them ________ in his lectures.
| A．interested | B．interesting |
| C．interest | D．to interest |
Alexander tried to get his work ________ in the medical circles.
| A．to recognize | B．recognizing |
| C．recognize | D．recognized |
There are some health problems that, when ________ in time, can become bigger ones later on.
| A．not treated |
| B．not being treated |
| C．not to be treated |
| D．not having been treated |
In April thousands of holidaymakers remained ________ abroad due to the volcanic ash cloud.
| A．sticking | B．stuck |
| C．to be stuck | D．to have stuck |
Film has a much shorter history, especially when ________ such art forms as music and painting.
| A．having compared to | B．comparing to |
| C．compare to | D．compared to |