用适当的形式填空
1.sending emails ____________(get)popular these days.
2.look!How fast Ben___________________(run）!
3.If it does't rain tomorrow ,they___________(go)for an outing/
4.If he eats too many hamburgers,he_______________(not stay)healthy.
5.I hope Mr.Smith_____________(visit)China soon.
6.My father________________________(leave)for Beijing in two days
7.When_____________we_______________________(meet)again?