There are many people downstairs. What do you think _____?

Thefallinthecostoflivingisdirectlyrelated_____thedropintheoilprice. [ ]

Eating _______ sweet food is not good for our health (健康).

Have they found the lost flight MH370?—Not yet. I’m really ______ the people on the plane.

We won’t go sightseeing if tomorrow．