1. Apples ... (say) to be good for our health
2 Hoa ... (bear) in Hue, but she ... (grow up) in HN
3. How... cakes ... (make)? ... you ... (ever / make) ?
4. I ... (see) an accident lát night. Somebody ... (call) an ambulance but nobody ... (injure) so the ambulance ... (not/need)
5. " Who ... (invent) the microphone?" It... (invent) by D.E. Hughes in 1872.