______ no doubt that 100 years ago animal testing was cruel but today animals in experiments are very well taken care of.
| A．It is | B．There is | C．This is | D．That is |
______ 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 |
The little boy still needs the ______ 20 dollars to do with some things ______.
| A．remaining; remained to be settled |
| B．remaining; remaining to be settled |
| C．remained; remained to settle |
| D．remained; remaining to settle |
I don’t like the way ＿＿＿＿＿ you talk to your mother.
| A．／ | B．in that | C．which | D．of which |
＿＿when we passed by its nest.
| A．Up into the blue sky did the bird fly |
| B．Up into the blue sky the bird flew |
| C．Up into the blue sky flew the bird |
| D．Flew up into the blue sky the bird |
Since everyone has come back here,＿＿＿.
| A．on goes our discussion |
| B．goes on our discussion |
| C．on does our discussion go |
| D．does on our discussion go |