--______ he ______ any books? --Yes, he _______.
Students should learn how ________ problem.
—Why is Linlin practicing speaking English?—________ abroad for further study.
—Why are you so excited today?—We were told ________ a picnic this weekend.
How kind you are!You always do what you can ________ others.
He sat in the armchair, ________ a newspaper.