Bob often ____ his mother with the housework on Sundays.

Thepatient'sprogresswasencouraging,ashecould_______getoutofbedwithout

The_______(南面的)sideofthebuildinggetsmoresunshinethanthenorthern.

Beforeyouleavetheclassroom，please__thelights.

-How can we help the children in the mountain village?

-We can_______ leaflets to ask people to donate money.