As a Chinese saying goes, a mountain ______ be too high or an ocean too deep. Therefore, there is no end to our self-improvement.
It’s obvious that her refusing to see a doctor has ______ her illness worsening.
—Have you your application form,Janet?—Not yet.
If better use is ________ your spare time,you’ll make good progress in doing your business.
It is believed _______ he has gone to Shanghai. The problem is ________ we can’t get in touch with him.
____ the 1990s, the number of antelopes had fallen to about 50,000.