根据句意用所给动词的适当形式填空。
---When _______________he_______________ (move) here?
---Sorry, I don’t know. I have just seen him here.
Now Wuxi _______________ (become) a modern city, but the price of the houses here isn’t so high.
Lei Feng always did what he could _______________ (help) people in need.
There _______________ (be) great changes in Wuxi in the past few years.
There used_______________ (be) a small clean river near our school.
Since he fell off the bicycle, John ___________ (lie) in bed for nearly a month.
The woman sat under the tree, _______________( watch) her daughter dancing.
It is the second time that the two boys_______________ (forget) to return the book to the library on time.
They will come to see him if it ____________ (not be) rainy tomorrow.
This cake smelt so nice that I couldn’t stop ____________ (test) it.