--- _________?
---He was one of the most famous scientists in the world.
| A．what did Edison look like |
| B．Why was Edison so famous |
| C．How would you describe Edison |
| D．What were Edison’s strengths |
--- Sally, was ________ problem solved?
--- We were trying to think of ________ way out, but it was hard to find one.
| A．the; a | B．a; a | C．a; the | D．the; the |
The taxi was so slow that we might as well _________ on the bus.
| A．go | B．have gone | C．to go | D．having gone |
— Remember the first time we meet Jim?
—Of course I do. You ________ in the library.
| A．had read | B．were reading | C．have read | D．read |
Bank statement helps you__________ where your money is going.
| A．keep track of | B．put up with |
| C．come up with | D．fit in with |
— Have you been to the Great Wall?
—Perhaps not in my memory. ________, it might have been during my early childhood.
| A．If any | B．If so | C．If ever | D．If not |