1. They had already ............ the news when I informed it to them

knew

know

knowing

known

to know

2. When i moved in this city, Oscar hadn't ............ here for a year

lived

lives

living

live

to live

3. ............ your son brushed his teeth before he went to sleep

Have

Has

Having

Had been

Had

4. My children told me that they ............ their homework

had already did

had already done

had already do

have already done

have already did

5. He ............ his car when she was about to buy it from him

had sell

has sell

had sold

have sold

has sold

6. ............ you prepared yourself before you followed the National Examination?

Having

To have

Has

Have

Had

7. Cindy ............ English for several minutes when his father left the house

had studied

had study

has studied

have studied

had studying

8. My wife told me that she ............ my favorite cake

had cook

had cooking

had cooked

has cooked

have cooked

9. When we finished studying, We hadn't ............ the lesson

understanding

understood

understand

to understand

to understood

10. Paul had ............ his wallet for several hours before he finally found it under the table

looked for

look for

looking for

to look for

to looked for