Seeing the happy of lovely children playing in the park, I’m full of joy and confidence in the future of our country.

―Who is making so much noise in the garden? ―___________ the children.

It’s 8 o’clock in the evening. Tom ______ TV.

New York and Washington D.C. are good places to visit _____ May or October. [ ]

It’s very difficult to see ____ the window because the glass is very dirty.[ ]