My brother would like to buy a good watch but_______ was available from that shop.
After the earthquake, many kind-hearted people did what they could ________ those who suffered from it.
Japan and other countries have taken action ________ prevent nuclear radiation (核辐射).
— Kitty, there’s ________ cooking oil left in the kitchen. Would you please go to the supermarket and get ________? — OK, Mum.
Chinese is becoming more and more popular. It ________ in many schools in foreign countries.
— You speak French so well. How long have you learned it? — ________ I was fifteen.