Fill in the blanks: We use different bins _____________ different kinds of waste.
separates
to separate
separated
Fill in the blanks: Solar panel is used ________ ones home.
heats
to heat
heating
Fill in the blanks: Some people use mud and stone ________ a house.
to build
builds
building
Fill in the blanks: Many cities use dams _____________ water.
collecting
collects
to collect
Fill in the blanks: Teachers give homework ___________ students remember the lesson.
helped
helpings
to help
Fill in the blanks: I cannot afford _________ any more money this weekend.
spent
spendings
to spend
Fill in the blanks: The leaves begin ____________ in autumn.
to fall
to falling
to fell
