Scientific research results can now be quickly _____ to factory production.
| A．used | B．applied | C．tried | D．practiced |
He made another wonderful discovery,_____ of great importance to science.
| A．which I think is |
| B．which I think it is |
| C．which I think it |
| D．I think which is |
When the poor old lady tried to ______ the cup on the shelf to have a drink, she ______.
| A．reach for; fell down | B．reach; fell down |
| C．reach for; had fallen down | D．reach; was falling down |
Maria has written two novels, both of _____ have been made into television series.
| A．them | B．that | C．which | D．what |
Mary is ill today. If she ______ ill, she _______ absent from school.
| A．weren’t; couldn’t be | B．wasn’t; wouldn’t have been |
| C．wasn’t; wouldn’t be | D． weren’t; won’t be |
Mary had promised to give me a ticket for tomorrow. She failed, ______.
| A．but | B．too | C．either | D．though |