1.My sister _____walked______(walk) to school everyday last year.
2.We ________will have_____(have) an exam again sometime next week.
3.By 1993,we ____had planted_____(plant)20,000 trees.
4.Her sister ______has gone_____(go) to Shang Hai ,she ____left_____(leave) this morning.
5.My friend Wang Hai often ____swims_______(swim) in the river .
6.The writer ________has finished__________(finish )several story books since 1980.
7.I asked my mother ___if ____she ___would come______(come) back soon.
8.What ____were___you____doing______(do),when I called you?
9.Don't cry!Our teacher ________is going________(go) over his lessons.
10.He ___has_____just______had________(have ) his breakfast.
第七题感觉出的有点问题,请确保是原题.