【推荐1】In this lesson,the students will learn how __________ (surf) the Internet safely and effectively. (所给词的适当形式填空)

【推荐2】To his disappointment, his son became addicted to _______ (surf) the Internet. (所给词的适当形式填空)

【推荐1】In Save Money: Good Food, she visits a different home each week and with the help of chef Matt Tebbutt offers top tips on ________ to reduce food waste, while preparing recipes for under £5 per family a day. （用适当的词填空）

【推荐2】I don’t know ________to do with all the problems. (用适当的词填空)

【推荐3】In this lesson,the students will learn how __________ (surf) the Internet safely and effectively. (所给词的适当形式填空)