Question

Use Present Perfect Continuous or Past Perfect Continuous
1.How long...you (read) this book?
2.My hands are dirty.I (repair) the car
3.Jill (study) English for five years before she went to the USA.
4.Dan (work) at the factory for 5 years. Then it was closed

Answer 1

1 how long have you been reading
 2 I have been repairing
3had been studied
4 had been working