.Walking alone in the deserted village, John was scared. He thought he ______Tom to go with him.

._____ the book where it was ______.

 I don’t think _____ possible to master a foreign language without much memory work.

Scientists photographed for the first time ever _____ wild gorillas used a stick to test the depth of a pool before getting into it, according to a recent study.

—Does _____please you to give gifts to others? —Sure．