You don’t care if he practices singing for a while, ________

Do you think he has improved his English much enough?—- Yes. You couldn’t hope for _________ at this time.

Only by increasing the number of doctors by 50 percent _______ properly in this hospital．

After two years’ research, we now have a ____ better understanding of the disease.

October 1,1949 is the day_________ the People’s Republic of China was founded.