The reason__________ their failure you know is they didn't get fully prepared for the experiment.
| A．why.., that | B．that.., why | C．for.., that | D．why.., because |
It knowledge is power, ____Sir Francis Bacon wrote in 1579, ____perhaps creativity ca be described as the ability to use that power.
| A．what; and | B．as; then | C．which; and | D．that; then |
I think you must be mistaken about seeing him at the theatre; I’m sure he_____abroad all week.
| A．is | B．was | C．has been | D．had been |
—Have you nearly finished?
—____, we have just begun.
| A．Above all | B．After all |
| C．On the contrary | D．On the other hand |
—Hold the ladder for me!
—That’s_________.
| A．all | B．it | C．all right | D．complete |
The president stood by a window inside the room, ____, looking over the square.
| A．where I entered | B．into which I entered |
| C．which I entered | D．that I entered |