Remember to wash your hands __________ you have meals.

Remember to wash your hands __________ you have meals.

A．before           B．until              C．though           D．unless

Remember to wash your hands __________ you have meals.

1. A.
   before
2. B.
   until
3. C.
   though
4. D.
   unless

They had to wash it for him, ________ they?

1. A.
   hadn't
2. B.
   weren't
3. C.
   didn't
4. D.
   haven't