He didn’t make ______clear when and where the meeting would be held?

 The fact that she can't talk makes      ________  difficult for her to communicate with her new classmates.

Peng Liyuan, China’s first lady, became one of the newest members of the most powerful women list, ranking 54th, along with eight ______ Chinese women, including Margaret Chan, director-general of the World Health Organization, Cher Wang, chairwoman of HTC and so on.

If I can help_______, I don't like working late into the night.

—Who knocked at the door?—I’ve no idea. I just pretended nobody was at home, so I didn’t ask who ________ was.