_____ all the inventions have in common is ______ they have succeeded.
| A．What; what | B．That; what | C．What; that | D．That; that |
. --- It’s the office! So you ______ know smoking is not allowed here.
--- Oh, sorry.
| A．must | B．will | C．may | D．need |
On the day I was to take the driving test, so ______ was I that I could not understand what I was
| A．nervous | B．anxious | C．upset | D．shy |
The house rent is expensive. I’ve got about half the space I had at home but I’m paying _____ here.
| A．as much three times | B．three times as much |
| C．much as three times | D．twice times much |
He ______ his paper to see if there are any obvious mistakes.
| A．looked into | B．looked up | C．looked around | D．looked through |
--- Are you still thinking about yesterday’s game?
--- Oh, that’s _____ .
| A．how I feel about it | B．whatever I feel excited |
| C．what makes me feel excited | D．when I feel excited |