Các câu ví dụ cho từ when

1. This fits with an observation that colds and flu are more common in winter and spring, when vitamin D levels are lowest.

2. when the war broke out, the first lesson children were taught was to dig tunnels and bunkers.

3. Vietnam’s top technology university FPT has raised eyebrows by announcing plans to allow students to use Bitcoins to pay for their tuition fees at a time when the country is still groping for ways to manage the virtual money.

4. Hundreds of homes and other buildings were "heavily damaged" when the tsunami struck along the rim of the Sunda Strait late on Saturday, Sutopo Purwo Nugroho, spokesman for the disaster mitigation agency, said.

5. TV images showed the seconds when the tsunami hit the beach and residential areas in Pandeglang on Java island, dragging with it victims, debris, and large chunks of wood and metal.

6. Dramatic TV footage showed the seconds when the tsunami hit a concert at the event and washed away the stage where local rock band Seventeen was performing.

7. The treaty will be open for signatures as of September 20 and will enter into force when 50 countries have ratified it.

8. 9%) of respondents born between 1980 and 1999 said they often use cash to pay when traveling abroad.

9. Quynh Ngoc, a caregiver at the center, said that when they first arrived, the children were often taciturn and rigid, traumatized by the abuse they suffered.

10. The hospital continues to treat the patient and conduct the necessary tests and procedures to prepare for a lung transplant if and when necessary, he said.