With the improvement of people’s living conditions, most mothers _______ in hospitals.
| A．have delivered their babies | B．have born their babies |
| C．have their babies born | D．have their babies delivered |
__________ fired, your health care and other benefits will not be immediately cut off.
| A．Would you be | B．Should you be | C．Could you be | D．Might you be |
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 |
Only then___________ how much damage had been caused.
| A．she realized | B．she had realized |
| C．had she realized | D．did she realize |
In the dark forests ________, some large enough to hold several English towns.
| A．stand many lakes | B．lie many lakes | C．many lakes lie | D．many lakes stand |