—The food here is very nice. Thank you for inviting me.— _____ I’m glad you enjoyed it.
The world’s population is getting larger and larger, so scientists are trying to ______ new ways to solve the food shortage.
He finds watching movies ______because the people speak too quickly.
E-mail is very popular today. People hardly post letters, _________?
—Who helped Jessie with her English?—_______, she taught herself.
— You look so healthy!— Yeah, I like eating apples. An apple a day keeps the _______ away.