Помогите пожалуйста с английским :
Choose the appropriate forms of the verbs to complete the sentences. 1) I left the classroom as soon as I (had written/had been writing) the test. 2) Andy came and said that they (had written/had been writing) their essays for an hour and a half. 3) My mother gave me her mobile because I (had lost/had been losing) mine. 4) George said he (had prepared/had been preparing) for his exam for a week. 5) After Jim (had paid/had been paying) for the books he left the shop. 6) I thought we (had waited/had been waiting) for Ann too long and decided to tell Andrew about it. 7) We (had swum/had been swimming) in the river for half an hour when Alfred said he was going to lie in the sun a bit. 8) After Lily (had packed/had been packing) her suitcase she headed for the car.