Apples are usually sold by ________ weight and eggs are sometimes sold by ________ dozen.
| A．the; the | B．/;a | C．/; the | D．the; a |
The manager was satisfied to see many new products ______ after great effort.
| A．having developed | B．to develop |
| C．developed | D．develop |
Until now, we have raised 50.000 pounds for the poor children, ______ is quite unexpected.
| A．that | B．which | C．who | D．it |
Was it because Jack came late for school ______ Mr. Smith got angry?
| A．why | B．who | C．where | D．that |
Grandma pointed to the hospital and said, "That's ______ I was born."
| A．when | B．how | C．why | D．where |
She'd lived in London and Manchester, but she liked ______ and moved to Cambridge.
| A．both | B．neither | C．none | D．either |