. The mother didn’t know ___ to blame for the broken glass as it happened while she was out.
| A．who | B．when | C．how | D．what |
At the foot of the mountain __________.
| A．a village lie | B．lies a village |
| C．does a village lie | D．lying a village |
Only then __________ how much damage had been caused.
| A．she realized | B．she had realized |
| C．had she realized | D．did she realize |
—It’s burning hot today, isn’t it?
—Yes. __________ yesterday.
| A．So was it | B．So it was |
| C．So it is | D．So is it |
So difficult __________ it to work out the problem that I decided to ask Tom for advice.
| A．I did find | B．did I find |
| C．I have found | D．have I found |
__________ homework did we have to do that we had no time to take a rest.
| A．So much | B．Too much |
| C．Too little | D．So little |