I have two brothers, ________ are doctors.
| A．both of them | B．both of whom | C．neither of whom | D．each of them |
The most favorite room is the tidy study with a fireplace, we can watch TV and enjoy the nice scenery outside．
| A．where | B．when | C．that | D．which |
I often have conversations with John over telephone, while keep in touch with Tom by__________ letter．
| A．不填;;the | B．不填;a | C．the;不填 | D．the; a |
I lost my way in complete darkness and, matters worse, it began to rain．
| A．made | B．having made | C．making | D．to make |
She had golden hair when she was a child, but_________ she got older and older, her hair went darker and darker．
| A．while | B．when | C．after | D．as |
___________she was invited to the ball made her very happy．
| A．If | B．That | C．When | D．Because |