1.
2. were ( số nhiều )
3. was watching ( quá khứ tiếp diễn )
4. were
5. was searching
6. was ( số ít )
2.
2. Were the children hiding the treasure? ( câu hỏi thì quá khứ tiếp diễn )
3. The king and queen were not staying in the castle. ( câu phủ định )
4. we were studying at Greece. ( câu khẳng định )
5. Henry was not speaking to his brother.
6. was she visiting the Natural History Museum?
3.
2. they were
3. he wasn't
4. I wasn't
5. they were
6. they weren't
