He is very popular among his students as he always tries to make them __________ in his lectures.
_____, I got better and returned to work.
It is already 10 o’clock. I wonder how it ______ that she was two hours later on such a short trip.
--Why does the lake smell terrible? ---Because large quantities of water ______.
—Miss Wang,I feel very nervous with the competition approaching.—________. As long as you can finish it,it is a victory.
Since our country has so many good table tennis players, we have to ______ the best ones to take part in the game.