A sheep ______on this kind of special grass which usually grows much faster than on ordinary.
| A．fed; one | B．feeds; the one |
| C．fed; that | D．feeding; it |
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 |
—ou___________ stop me．
—Even if you __________it, I won't allow you to swim across the river．
| A．mustn't; dare not do | B．may ; dare not do |
| C．can; dare to do | D．needn't; dare do |