Раскройте скобки, употребляя глаголы в таких временах: Present, Past, Future Simple; Present, Past, Future Continuous; Present, Past Perfect.
1. We (to go) to play in the yard when mother (to come).
2. They (to play) football the whole day if you (to give) them a ball.
3. I (not to be) sure now that they (to write) the test by four p.m.