用括号中所给动词的适当形式填空,必要时可加词
问题描述：
用括号中所给动词的适当形式填空,必要时可加词
What _____they_______(do)over there yesterday?Do you know?
Mrs Green made Alice_______(sweep )the floor after supper
The students are busy ____(get ) ready for the English exam
Thank you for ______(help )us so much
答
did...do
to sweep
to get
helping