1 . _____, so I had to wait for my parents back.

A．Leaving my key in the office

B．Because I left my key in the office

C．I left my key in the office

D．My key left in the office

2 . The sentence"We can fly a kite in the park."shares the same structure with________.

A．She saw a white-haired man	B．He gave me a smile.
C．He was friendly	D．He wrote a letter in the classroom

3 . 阅读句子,分析其结构,并从以下选项中选出正确的结构。

A.SVOA       B.SVOC       C.SVO       D.SV IO DO E.SP       F.SV       G.SVA

1. We had chemistry in the newly built lab.
2. Tom is looking forward to meeting the new exchange student.
3. The maths homework looks easy.
4. The 100-year-old school lies in the centre of the city.
5. He began learning English ten years ago.
6. The teacher found the classroom empty.
7. That dream has come true!
8. Tim writes his parents an email every week.
9. He tells them what happened on the ship.
10. Studying and doing homework seem much more fun.