Li Na ____________ her husband’s significant contribution in her development on the WTA Tour.

I know that if I start watching a soap opera, I immediately become hopelessly _____.

It  is said that people are       likely to tell lies over the phone as they are in emails.

Of the two-child policy，_________ some see the bright side，others worry about a baby boom in China．

 One way to ________ species under threat of extinction—whatever the cause—is to remove them to zoos or parks and feed them there.