______ 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 isD．That is
I try to understand __________ that prevents so many Chinese from being as happy as one might expect．
A．why is it B．what is it
C．why it is D．what it is
It’s raining heavily ．Little Mary felt cold , so she stood ______to her mother ．
A．close B．closely C．closed D．closing
China understands the situation and needs of underdeveloped countries on the issue of climate change and urges developed countries to support them______ technology and finance．
A．in spite of B．owing to
C．regardless of D．in terms of
______ you are familiar with the author’s ideas, try reading all the sections as quickly as you possibly can．
A．Now that B．Ever since
C．So that D．As long as
From her pocket , Ms Lee took out _______ was like a coin and gave it to the poor girl in rags ．
A．that B ．which C．it D．what
