-What is the boy standing out of the house for? .
-Because he left his key at home. He can't get in the house his parent comes back.
| A．because | B．until | C．after | D．when |
So much homework and so many after-school activities really make the students feel _______. That’s why we should lighten the burden(减负) on students.
| A．pleasant | B．excited |
| C．embarrassed | D．tired |
It was amazing. Let’s find out what was the _______ of the accident.
| A．because | B．excuse |
| C．cause | D．reason |
Why not use stones to build our new house? A house built of stone does not catch fire as easily as ______ made of wood.
| A．one | B．it | C．this | D．that |
—I was told to cook for my mother on her birthday.
—What ______ great advice! Who gave you ______ advice?
| A．an; a | B．an; the |
| C．/; the | D．/; an |
—Can you tell me _________________?
—Since 1990.
| A．how long you’ve bought the MP3 |
| B．when you joined the Party |
| C．how long have you become a guitar player |
| D．how long you’ve lived in the town |