1) go
2) Will you help your father tomorrow?
3) is swimming
4) Have you ever seen the Pyramids?
8) went
9) come
10) came
11) won't go, went
12) is crying
13) What is your brother doing now?
14) likes, eats
15) have never seen
16) get up, will get up
13) What are you reading now? I am reading Tom's book