The little boy who got lost decided to remain _____ he was and waited for his dad.
Butterflies ________ a sweet liquid produced by flowers, which bees and other insects collect.
The girl in the photo was smiling sweetly, ________.
Electronic products are ________ must for new generation of ________ college students.
—Are you finishing your task? —________. We need no less than three hours more.
The novel written by the author ________ best, but five years ago no one could have imagined how great a role he ________ in the literary world.