Many social workers went to Ya’an to help clean water and food to local people to reduce their pain from the earthquake.

It ______ three years since I left England.

英语老师指着“Ff”问道：What’s this? 你应答：_______.

Do you think you could do without help?- __________. This is not the first time for me.

The more careful you are,_____ mistakes you will make. [ ]