$$Answer$$
$$1.$$ If only I could watch the cartoon on TV.
$$5.$$ Phong wishes he could win the championship.
$$7.$$ If only Lien would go on a camping trip.
$$10.$$ They wish they could leave for HN with the team.
$$11.$$ She wishes she could get good marks.
$$12.$$ Phong wishes he had a computer at home.
$$13. Thu wishes she had time to go to the movies with her friends.
$$14.$$ She wishes her mother would buy her new clothes for Tet.
$$15.$$ The students wish they could go abroad to visit their pen pals.
@Kiến thức:
$$-$$ Câu ước wish hiện tại
$$→$$ S + wish(es) + (that) + S + V-ed
$$-$$ Câu ước wish tương lai
$$→$$ S + wish(es) + (that) + S + would/could + V
$$→$$ If only + S + would/could + (not) + V
$$#tiendat37208$$