It’s time you changed your attitude ___ your studies, for the time is running out.
| A．with | B．towards | C．for | D．at |
It was Alice and her friends who helped the homeless old woman,______?
| A．wasn’t it? | B．wasn’t she | C．didn’t they? | D．weren’t they? |
He felt _______ to remind the public to protect the environment.
| A．his duty | B．that is his duty | C．it his duty | D．it is his duty |
The research they had been devoted to ______ to be of great value to the cancer patients.
| A．is proved | B．proves | C．has proved | D．proved |
A week-long raining is coming, _________, the farmers say, will do harm to the growth of plants.
| A．it | B．that | C．what | D．which |
---I don’t like the guest that is coming to visit this evening.
---_________ you feel about him, try to be polite.
| A．How | B．What | C．Whatever | D．However |