the new schedule, teachers of primary and secondary schools must _____each class on time instead of adding extra lessons.

testing this method on patients, DrBaker had tests for two yearson three hundred dogs

The manager has come back from his business trip. Heis asking you for the report.—Oh，my god ! I haven’tfinished it yet. But he____ back at the company tomorrow.

can’t my pen now. Will you please lend me yours?[ ]

Math is_______ mathematics.