Edward, you play so well. But I ______ you played the piano. 
| A．didn’t know | B．hadn’t known |
C．don’t know | D．haven’t known |
.Finally they decided to go shopping ________ the rain.
| A．in spite of | B．because of | C．instead of | D．in case of |
____________ the Roman numerals, the Arabic numbers are rather simple to use.
| A．Compared with | B．Comparing with | C．Compared as | D．Comparing as |
___________ a reply, he decided to write again.
| A．Receiving not | B．Not receiving | C．Not having received | D．Having not received |
This is the material ________ in the laboratory tomorrow morning.
| A．tested | B．to be tested | C．being tested | D．will be tested |
.I’ll go to bed now. I am not ________ up late.
| A．addicted to stay | B．accustomed to stay |
| C．accustomed to staying | D．addicted to staying |