The best way to explore _______ countryside is on _______foot.
A good listener takes part in the conversation,________ ideas and raising questions to keep the talk flowing.
When the group discussion is nearing its end,make sure to ________ it with important points.
Try not to cough more than you can________since it may cause problems to your lungs.
Time is of no importance to great thoughts,________ are as fresh today as when they first passed through thinkers' minds ages ago.
Now there is just one point ________ I wish you to make quite clear.