I have an appointment      Dr. Smith, but I need to change it.

If the time is    ________    exactly, the paper can be finished on time.

一What do you think of the UNICEF?一Great. Its programs have saved thousands of children in Africa who would have______died from lack of food or terrible diseases.

After the new equipment was introduced, they produced ______machines this year as the year before.

The majority of people in the town strongly ____ the plan to build a playground for children.