The students _____ busily when Miss Brown went to get a book she ____ in the office．
| A．had written; left | B．were writing; has left |
| C．had written; had left | D．were writing; had left |
His aunt’s letters ________ memories of those beautiful days when they used to live together in his hometown.
| A．call at | B．call for | C．call on | D．call up |
The thing that _______ is not whether you fail or not, but whether you try or not.
| A．matters | B．cares | C．considers | D．minds |
Compared with his sister, Jerry is even more ________ to, and more easily troubled by, emotional and relationship problems.
| A．skeptical | B．addicted | C．available | D．sensitive |
One of the requirements for a fire is that the material _________ to its burning temperature.
| A．is heated | B．be heated | C．would be heated | D．shall be heated |
In the USA, _______ Thanksgiving Day is a harvest festival. Traditionally, it is _______ time to give thanks for the harvest and express gratitude in general.
| A．the; a | B．/; the | C．/; a | D．the; the |