Thank u all for the answers
Here again some Qs
1- " All you had to do is write answers and put them into boxes." , this seems like weird for me, why it uses of "write" as verb? Is it right grammatically? shouldn't use of noun, "writing"?
2- " We did have to play ... " , I know in some cases we use "do" before verbs for emphasizing, so is it kind of them , is it correct really?
3- When we can omit the Do/Does/Did in question forms and make Qs like: "What happened?", "What makes motorbikes easy to run?" and ..., I heard in cases which about the Subject we ask, we can don't use them? Is it correct? Is there any other situation?
4- I'm so sorry, maybe it seems funny but it's really my question, " What is the role of "pretty" and "quiet" before adj-s? : pretty boring; pretty awful; quiet huge; quiet big and...
R they strengthening or weakening?
Thanks again
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