Great changes _________ in many fields since China was open to the whole world.
A. have taken place B. took place
C. have been taken place D. were taking place
_____you’ve made a promise, you are expected to carry it out.
A. While B. Unless
C. Once D. Though
His parents insisted that he __________English well when he was in junior school.
A. would learn B.must learn
C. learned D. learn
I don’t like this new model of App6 +; _________I had enough money, I wouldn’t buy it.
A. only if B. even if
C. as if D. if only
Your speech was heard by a group of five judges, _______ agreed that it was the best one this year.
A. all of whom B. all of who
C. all of them D. all of those
______ is the ability to do the job______ matters, not where you come from or what you are.
A. This / that B. That / that
C. It/ that D. It/ which
