Past perfect vs Past perfect Continuous

I was able to buy a new cell phone because I _________ enough money

• had saved

• had been saving

• saved

I got wet because I ____________ my umbrella.

• forget

• had forgotten

• had been forgetting

They were happy when they arrived because they ____ for 12 hours.

(fly)

She was tired because she ___ all the weekend.

• had studied

• have been studying

• had been studying

I knew about her company because I _________ there in the past.

(work)

She __________ for hours when I found her.

(cry)

• cried

• had been crying

• had cried

The room was dirty because the cleaners__________ it yet.

I ____ to London twice by the time I got my job there.

(verb to be)

Richard needed a vacation because he ____ hard for six months.

(work)

The boys ____ basketball for an hour when it started to rain.

• had played

• had been playing

• have played