He was last seen _________in his office at about 7:15 p.m..
| A．work | B．working |
| C．to work | D．worked |
.--- How many tomatoes do we need?
---_________.
| A．None | B．No | C．Not | D．Nothing |
--- Would you like to go shopping with me?
--- I’d love to, ____ I can’t. I have many things to do.
| A．or | B．but | C．so | D．and |
The trousers are too big for me. Please show me a smaller ________.
| A．one | B．pair | C．piece | D．set（套） |
The teacher says we _____read ______ comic books.
| A．mustn’t, much too | B．can’t, much too |
| C．may not, too many | D．shouldn’t, too many |
Helen needs _____________ candles for her birthday.
| A．more some | B．some more | C．one | D．any |