buatlah kalimat negatif positif dan tanya menggunakan bahasa inggiris

+) they had been at home before noon
-) I hadn't walked for an hour when I meet you
?) had he studied english for a year when I began it ?
+) I have been in australia before
-) we haven't seen you for a long time
?) has he drunk his milk?

+ my friend was in my house yesterday
- my friend wasn't in my house yesterday
? was my friend in my house yesterday?