1 How about having dinner and then go to the theater?
`to` going
Vì How about+ V-ing.
2 It's possible store solar energy for a number of days.
`to` store
Vì adj+ to V.
3 Our environment has become worse but there are many factors causing from men.
`to` caused
vì vế trước chia V dạng Vp2 thì sau cũng vậy.
4 My recent electricity is enormous so I'm worried in it.
`to` about
Vì worry about St: lo lắng về cái gì.
5 She turned on her radio at the lowest in order not to disturb the others at night.
`to ∅`