WHEN the students (work) in groups in the classroom, the principal (come) in to give an announcement.

Change the words between brackets into the CORRECT ones!

• worked -- was coming

• were working -- was coming

• were working -- came

• worked -- were coming

AFTER Hailey (close) all the windows and doors last night, she (go) to bed.

Change the words between brackets into the correct ones!

• had closed -- went

• closed -- had gone

• had been closing -- went

• closed -- had been going

WHEN father (arrive) at home yesterday, the children (work) on their school work.

• were arriving -- were working

• was arriving -- were working

• arrived -- was working

• arrived -- were working

Mary (have) a conversation with the Special Guest WHILE Martha (prepare) everything in the kitchen yesterday.

Change the words between brackets into the correct ones!

• were having -- were preparing

• had -- prepared

• had -- was preparing

• was having -- was preparing

Look at this timeline carefully! Which sentence is CORRECT to describe the situation?

• Before Pedro had finished all his assignments, he had dinner.

• After Pedro had finished all his assignments, he had dinner.

• Before Pedro had dinner, he had finish all his assignments.

• After Pedro finished all his assignments, he had had dinner.

"BEFORE Sandra sent her novel draft to the editor, she had been writing it for two months."

Which timeline below describes the situation CORRECTLY?

• 
• 
• 
• 

Fill in the blanks with the correct forms!

The scientists ... with the genetically modified fruit for nine months BEFORE they publicly ... it last month.

• experimented -- had announced

• have been experimenting -- announced

• experimented -- had been announcing

• had been experimenting -- announced

Emma (meet) one of her old friends WHEN she (take) her dog out for a walk last month.

Which one is the CORRECT answer?

• met -- was taking

• was meeting -- took

• met -- took

• was meeting -- was taking

Complete the dialogue below with the correct sentence!

"What were you doing at 6 in the morning yesterday?"

"I ... around my neighbourhood.."

• were cycling

• cycled

• was cycled

• was cycling

Complete the dialogue below with the CORRECT sentence!

"Where did you buy the delicious lasagna?"

"I ... ."

• was buying it at the new restaurant.

• buy it at the new restaurant.

• bought it at the new restaurant.

• have bought it at the new restaurant.