—What are you mailing, Ryan?
—A textbook __________ a new method of teaching physics. I want my friends to take a look at it.
| A．is based on |
| B．based on |
| C．basing on |
| D．which based upon |
—This returned Chinese scholar has become one of the top experts in this field.
—Yes , I know him very well. He ___________ in Africa with wild animals for eight years.
| A．has worked | B．had worked | C．worked | D．has been working |
.—_______ John this week?
—Yes.
—Where _______ him?
—In the library.
| A．Did you see; did you see | B．Have you seen; did you see |
| C．Do you see; have you seen | D．Have you seen; have you seen |
Yassin’s death was not _______ to stop Hamas’ ability to ________ terror attack.
| A．hoped; go on | B．decided; hold out |
| C．intended; break out | D．expected; carry out |
—Well, that was really a good meal. I _______ you were a really good cook.
—Thank you.
| A．didn’t know | B．don’t know | C．haven’t know | D．hadn’t known |
After he left college, he was employed in an international company and __________ there ever since.
| A．worked | B．has worked | C．had worked | D．was working |