Nature has provided Shangri-la with endless natural treasures, _________the land a happy home for the local people.
He seems to be doing nothing, but _____ he is just waiting for his chance.
The boss requested that he _____ there to work.
You must ______ your papers before you hand them in.
Did you have any difficulty _____ his house?
He failed in the exam not only his laziness but also he didn’t listen to the teacher.