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 |
_____, he talks a lot about his favorite singers after class.
| A．A quiet student as he may be | B．Quiet student as he may be |
| C．Be a quiet student as he may | D．Quiet as he may be a student |
Never before _______in greater need of modern public transport than it is today.
| A．has this city been | B．this city has been |
| C．was this city | D．this city was. |
______ about wild plants that they decided to make a trip to Madagascar for further research
| A．So curious the couple was | B．So curious were the couple |
| C．How curious the couple were | D．The couple was such curious |
______, Carolina couldn't get the door open.
| A．Try as she might | B．As she might try | C．She might as try | D．Might she as try |
____ snacks and drinks, but they also brought cards for entertainment when they had a picnic in the forest.
| A．Not only they brought | B．Not only did they bring |
| C．Not only brought they | D．Not only they did bring |
Maybe you have been to many countries , but nowhere else such a beautiful palace .
| A．can you find | B．you could find | C．you can find | D．could you find |