用所给词的适当形式填空。

1. We spend an hour ________ (do) housework.

2.  I watched him________ (play) when I was 10.

3.  When I________ (be) seven, I ________ (start) learning skating.

4.  I usually________ (visit) my grandparents on weekends.  But last week I ________ (go)

    to the park.

5.  My mother sometimes________ (watch) TV in the evening.  Last night, she ________ (do)

    housework.