If you are going to stay in the United States for longer than a(n) ______ visit, you may be interested in learning more about its people and culture.
The number of people invited _____ fifty, but a number of them _____ absent for different reasons.
It was raining hard at that time. _____, we had to leave as soon as possible.
What he suggested _____ a good suggestion. Let’s put it into practice.
The Great Wall winds its way _____ mountains _____ valleys and _____ deserts to the east.
They did a very good job. More than one student _____ praised by the teacher.