My English teacher insisted that theexercises _________ very difficult and that we ________ it carefully.

Could you go to the park with me this afternoon— Sorry, I _______ there. I went there yesterday.

Is the project difficult for the students—No. Most of the relevant information ______ to them.

I’m sorry to bother you.—- You didn’t bother me, , I like your company.

The twins look the same， but they are really different.