---What should we do to fight A/H1N1 flu?
---We should wash hands often, avoid ______ to crowded places and so on.
A.go | B.going | C.gone | D.to go |
---What should we do to fight A/H1N1 flu?
---We should wash hands often, avoid ______ to crowded places and so on.
A.go | B.going | C.gone | D.to go |