21. For more information, please send an e-mail, ______ you can also include your advice to us.
| A．when | B．where | C．which | D．that |
A sheep _____ on this kind of special grass usually grows much faster than ____on ordinary.
| A．feeding; one | B．feeds; the one | C． fed; that | D．feeding; it |
-When__________ and visit our exhibition next month?
- When_______, I will let you know.
| A．will he come; he will come | B．will he come; he comes |
| C．does he come; he will come | D．does he come; he comes |
--You forgot your keys when you left home in the morning.
--Good heavens,___________.
| A．so did I. | B．so I did. | C．so you did. | D．so did you. |
My cousin Gorge went to Shanghai in _____ twenties in ____ 1980s, and has lived there ever since.
| A．his, the | B．the, the | C．the, / | D．his, / |
This new-type machine____________ little room.
| A．takes up | B．is taken up | C．has been taken up | D．is taking up |