In the evening, _________ by the coconut tree to look out the sea.

A. sit

B.sat

C.Sitting

D.sits

The beach is curved, 7km long and suitable for________ along its length

A. showering

B.raining

C. showing

C. bathing

Phong Nha Cave in Viet Nam is known ___a World Heritage Site

A. as

B.that

C.of

D.like

Dalat is known _________ the city of Eternal Spring

A. at

B.as

C.on

D. so