­—Why did the police _____ the crowd—Because the president’s car ____ in the street.

Only after you finish your homework______TV.

Look! If we had begun to do the work yesterday morning, we _____ ourselves just like them．

Do you have any difficulty ________

Peter, you feed the gold fish and the two little tortoises, ______?　— I did it in the morning; it’s a routine for me now．