___ Imperial Citadel of Thang Long is close to other tourist sites, it is very convenient to visit

A. Whereas B.Unless C. Though D. Since

1. the landscape was so beautiful that i couldn't stop looking at it

It was such 

2. The explorers have never seen a larger cave than Son Doong 

Soon Dong is

3. The tour guide said, "Let's set up a camp by the lake"

The  tour guide suggested

They expect that the coming years will see Phu Quoc City look get to grown__

A. sustained B. sustainable C. sustainbly D. sustainability

Choose the underlined part that needs correction

1. She is believed that the scenery of the Ta Dung Lake in Dak Nong unfolds before our eyes

2 He indicated another mountain, dontted with cattle and white tents and suggested we tried there 

3. The area is a destination offering all manners of activities, from climbing mountain to canoeing