As is known to us, theory is based on practice and _____ servers practice. A. by chance B. in turn C. in return C. by turn
I didn’t see her in the meeting room this morning. She _____ at the meeting.
–Would you permit me ______here? - Sorry, we don’t permit _____ here in the reading room.
I remember the whole thing _____ it happened yesterday.
Our experiment had got into _____trouble, so we decided to take _____ chance and add more water, and luckily, we succeeded.
–Would you mind us asking you a few questions? –_______.