1)Stays
2)I'm doing
3)Have seen (если прошлое), will see (если будущее)
4)Think
5)Was tired, went
6)Shaved, was cutting
7)Will help
8)Got, use
9)It's raining
10)Had been playing
11)Was built
12)Was being examined
13)Will build
14)Travel
15)Leaves for
16)Would do
17)Had seen,would have spoken