---Why were you late for school today?
----It was ________ I help catch a thief on the bus.
| A．since | B．as | C．for | D．because |
While ______ out of the window, I saw my father growing some vegetables in the garden.
| A．look | B．looks | C．looking | D．looked |
---I phoned you at 7 yesterday evening but nobody answered.
---Oh, I ______ my dog in the park then.
| A．walked | B．was walking | C．had walked | D．would walk |
Remember to ________ the pockets before you put the trousers in the washing machine.
| A．go through | B．calm down | C．pack up | D．set down |
It is the first time that I ______________ such a beautiful scene.
| A．saw | B．see | C．had seen | D．have seen |
The policeman asked ________ with the old woman.
| A．what the matter was | B．what was the matter |
| C．what was the wrong | D．what matter was |