Ⅰ. 请补全下面句子的省略成分
1. Pity we live so far from the sea.
→It is a pity we live so far from the sea.
2. —Did you know anything about the accident?
—Not until you told me.
→ —Did you know anything about the accident?
—I didn’t know anything about it until you told me.
3. If possible, I’ll go there with you.
→If it is possible, I’ll go there with you.
4. —Are you an engineer?
—No, but I want to be.
→ —Are you an engineer?
—No, but I want to be an engineer.
