_______, water changed into steam.
| A．Heated | B．Heating | C．Being heating | D．to heat |
____ is no difference between A and B.
A. It B. Where C. There D. What
Was it in the place ____ the last emperor died?
| A．where | B．that | C．which | D．in which |
It was simply for that reason ____ I wouldn’t tell him the truth.
| A．why | B．which | C．so | D．that |
It’s the third time ____ I have been here.
| A．that | B．when | C．after | D．who |
Hurry up! ____ getting darker and darker.
| A．The sky is | B．It’s | C．Weather is | D．Time is |