A. It’s just as well I brought gloves. It’s freezing!
→ It’s I brought gloves. It’s freezing! (thing)

B. There were quite a lot of people at the demo.
→ There were people at the demo. (many) 

C. They said they’d call tomorrow, and they did what they promised.
→ They said they’d call tomorrow, and they . (their word)

D. I’m going for a jog – it’ll make me feel better.
→ I’m going for a jog – it’ll . (do)

E. We left at 7 a.m. so we would get to the airport early enough.
→ We left at 7 a.m. so we would get to the airport . (time)