A．Japanese students study much harder than Columbian students.
B．Columbian students score higher than Japanese students in math.
C．Columbian students are more optimistic about their math skills.
D．Japanese students have better conditions for study.

A．She needs more time to finish the report.
B．She hasn’t included any data in her report.
C．She forgot when the report was due.
D．She’d like the man to help her with the report.