You look tired. __________ working indoors, you should go outfor a walk.
We believe ________ we can find out the wonder drugs to H7N9 bird flu.
The Frenchman pointed to the spoon and asked me ________ to call that in Chinese.
We have realized ________ she is expecting is just an opportunity to test her ability.
—Haven't I seen you some place before?—Yes. That's ________ I don't go there anymore.
His writing is so confusing that it's difficult to make out ________ he is trying to express.