Fill in the blanks with in, on, or at. We have to speak English at school ____ Tuesday.

Fill in the blanks with in, on, or at. The Japanese air force attacked Pearl Harbor early ____ the morning.

Fill in the blanks with in, on, or at. The school. has some extracurricular programs ____ the weekend.

Fill in the blanks with in, on, or at. All schools have to hold a ceremony ____ Independence Day in Indonesia.

Fill in the blanks with in, on, or at. Leaves fall ____ autumn.

Fill in the blanks with in, on, or at. ____ the beginning of 1940, the war begin.