Have you ________ the time of the flight?
| A．made sure of | B．made sure |
| C．been sure to | D．for sure |
Everything was perfect for the picnic ______ the weather.
| A．in place of | B．as well as | C．except for | D．in case of |
Don’t promise anything ______ you are one hundred percent sure.
| A．whether | B．after | C．how | D．unless |
Dogs have a very good ______ of smell and are often used to search for survivors in an earthquake.
| A．sense | B．view | C．means | D．idea |
American Indianabout five percent of the U.S. population.
| A． | fill up | B． | bring up | C． | make up | D． | set up |
It is one of the funniest things ______ on the Internet so far this year.
| A．finding | B．being found | C．to find | D．found |