______that silver is not widely used as a conductor(导体)?
| A．Why is | B．Is it why | C．Why is it | D． Why it is |
---Why did the teacher get angry? --- __________ what we had done the day before.
| A．Because | B．Since | C．As | D．Because of |
Did you ask whose computer ______________ ?
| A．that blue one was | B．is that blue one | C．it was that blue one | D．that blue one is |
If you ____ your money ____ mine, we will have enough to buy one more set of stamps to ____our collection.
| A．join; in; add | B．add; to; add to | C．put; to; add up | D．add; in; add up to |
It was only with the help of the local guide ______.
| A．that was the mountain climber saved | B．when the mountain climber was saved |
| C．when the mountain climber was saved | D．that the mountain climber was saved |
---Is this book interesting? ---Yes, but I’m sure it won’t interest __________.
| A．everybody | B．anybody | C．nobody | D．somebody |