Our car broke down suddenly and the heavy rain________ our helplessness.
| A．added to | B．led to | C．turned out | D．made up |
Maria has written two novels, both of _________ have been made into television series.
| A．them | B．that | C．what | D．which |
That is the only way we can imagine _________ the overuse of water in students’ bathrooms.
| A．reducing | B．reduced | C．to reduce | D．reduce |
The doctor recommended he ____ a few more days in hospital.
| A．stays | B．to stay | C．stay | D．would stay |
At school, some students are active____ some are shy, yet they can be good friends with one another.
| A．although | B．while | C．so | D．as |
_____ many times, he finally understood it.
| A．Told | B．Telling | C．Having told | D．Having been told |