Поставьте глаголы в следующих предложениях в прошедшем и будущем временах.
1.There are many trees in our garden.2.There is a trolley-bus stop near my office.3.There are some mistakes in his dictation.4.There is a piece of chalk on the table.5.There is much snow in the street. 6. There are many flowers in the vase. 7. There are two pens in my bag.