The number of historic buildings which ________ has reached a surprising figure that we must be aware of.
| A．has been pulled down | B．had been pulled down |
| C．is being pulled down | D．have been pulled down |
Let’s learn to use the problem we are facing ________ a stepping-stone to future success.
| A．to | B．for | C．as | D．by |
—Would you like to join me for a quick lunch before class?
— ______, but I promised Nancy to go out with her.
| A．I’d like to | B．I like it. | C．I don’t | D．I will |
Mary is really good at taking notes in class. She can_almost every word her teacher says.
put out B. put down C. put away D. put together
Scientist have many theories about how the universe into being.
came B. was coming c had come D. would come
Animals suffered at the hands of Man ___ they were destroyed by people to make way for agricultural had to provide food for more people.
in which B. for which C. so that D. in that