If we ________ the waste materials,a lot of money will be saved.[ ]

ys children have to takearts, music and sports classes in their free time ____ busy schoolwork.

____my brother ____ my sister is able to use acomputer. However, I can.

Jenny’s husband got killed in the aircraft.—That’s why she was badly_________[ ]

You can’t imagine that a well-behaved gentleman__________ be so rude to a lady.