You can’t imagine what great trouble they have _____ the problem _____.
| A．to solve; being talked about |
| B．solving; discussing |
| C．to solve; to talk about |
| D．solving; being discussed |
---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 |
The task requested _______ did it _______ careful and brave enough.
| A．who,is | B．whom,was | C．whomever,were | D．whoever,be |