`1.` The park ranger asked the visitor whether the visitor was interested in a guided tour.

`2.` The travelers asked if Phu Quoc Island was a popular tourist destination.

`3.` We asked if we could observe diverse wildlife in Phong Nha-Ke Bang National Park.

`4.` The travel agent asked the traveler whether he/she preferred a city break or a beach vacation.

`5.` The photographer asked if it were difficult to photograph in the rice terraces in Sa Pa.

`6.` The astronomer said that the Australis Aurora could be seen in the Northern Hemisphere.

`-------------`

Câu tường thuật :

`@` câu kể :

`->` S + say / said / tell / told + ( that ) + S + V ( lùi thì )

`@` Yes / No question :

`->` S + asked / wanted to know / wondered + if / whether + S + V ( lùi thì )

`@` Wh_q :

`->` S + asked / wanted to know / wondered + Wh_q + S + V ( lùi thì )

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