单项选择题
A.No problem B.No trouble at all C.Thank you for asking me about it D.I can’t remember where I left my glasses
The big man has always been eating on the go,（）he has g...
单项选择题The big man has always been eating on the go,（）he has got stomachache.
A.so B.however C.as D.because
Great changes （） in China since 1978.A.take the placeB....
单项选择题Great changes （） in China since 1978.
A.take the place B.took the place of C.have taken place D.have been taken place
Electricity （） by the Greeks a good many years ago.A.wa...
单项选择题Electricity （） by the Greeks a good many years ago.
A.was first found B.was first discovered C.has first been discovered D.was seen first
