Kate looked so sad at the news that she failed in the exam that I didn’t know what to say to ____ her. [ ]

It was _____________________ that thetourists wanted to spend more time taking pictures outdoors.

Water-skiing and surfing are my favourite. How about you ? —-I ______surfing to water-skiing.

________ there, the southwest desert contains a remarkable variety of plants.

He is __________ honest boy. And he is __________ student in our class.