They haven't read the interesting books yet.
"Did you buy a dictionary ?""yes,I did."
"where did you buy it?""I bought it in a bookstore"
"when did you buy it ? " “yesterday”
1？
2 haven't read
3do buy do
4do buy buy / did you bought
5 did buy
will,done,haven't read,Have,bought,have,did,buy,bought,did,buy
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