Do you know the boy _______ under the big tree?
—Hi, Li Ming. Where are you going?—Oh, it’s you—Xiaohui. I ______ you.
The doctor ______ you for your cough is sure to _____ it.
It’s his laziness that ________ his failure in the last exam.
He is_______to have come back from the abroad.
After a long walk, they have ________.