Да, оно может сокращаться, легко) Всегда замечала, да и сама использую
1. guide
2. contestants
3. performed
4. stars
5. secret
6. channel
Had written
Have you performed
Have started
Had shown
Had already done
1) they went to the jungle, it’s hot day
2) they set on the grass, they saw a fish
3)fish,come here, yes
4)five o’clock, home