They____on the program for almost one month before l was arranged to help them. Now, we____on it as no result has come out.
| A．had been working: are still working |
| B．had worked; were still working |
| C．have been working; have worked |
| D．have worked; are still working |
Some experts argue that the reason why the price of houses can’t drop is that the supply is not ______ to the demand.
| A．adequate | B．sensitive | C．entire | D．accessible |
Pay as much attention to the things that are working positively in your life as you do to ______ giving you trouble.
| A．these | B．ones | C．what | D．those |
Smile when ______ the phone. The caller will hear it in your voice.
| A．taking up | B．putting up | C．picking up | D．bringing up |
It is suggested that you live ______ good and honorable life. Then when you get older and think back, you’ll get to enjoy it ______ second time.
| A．a; the | B．a; / | C．a; a | D．/; the |
—My professor and I have seen your paintings at the exhibition. They are so creative!
—______.
| A．No problem | B．Thanks for your compliment | C．Not at all | D．Nothing wrong |