用所给单词的适当形式填空。
________ (not play) football on the grass.
There are three girls ________ (look) after the old woman
用所给动词的适当形式填空。
________ the people ________ (can build) such a big house fifty years ago?
I ________ (not think) that Xiao Li ________ (be) at school tomorrow.
They thought and thought and ________ (try) to find a way ________ (save) their lives.
“
It ________ (rain). You'd better ________ (not go) out.
-- How many times ________ you ________ (be) to Russia?
-- Only once. I ________ (go) there in 1978.
He will be a worker after he ________ (finish) middle school.