We ______ that he explain to us why he was late for the meeting yesterday.[ ]

We still couldn’t decide _________ with ourdifficulties in learning English.

you mind if I smoked here—I am afraid…, but if you________.

He knows so much about the story. He must have read the book,_____?

The rapid economic growth that _____ in China in recent years has resulted in great improvements in living conditions for many Chinese.