______ Joseph off at the airport, Sally finished her work earlier.[ ]

If you _____ smoke, please go outside.

According to the statistics, Chinese families own _____ private cars today as they did in the 1990s.

is needed in the whole society, which requires parents to obey their own rules and set a good example _______ children can trust them.

We always visit the old people’s home _______9 a.m. on Sundays.