Complete the sentences with the expressions below. Change the form when necessary.leaf throughhave no ideaa variety ofput ... in touch with believe ingo throughbe lost inif it wasn’t / weren’t for sb. / sth.1. You’ll ____________ difficult times, and suffer, and learn.2. I ____________ being strong when everything seems to be going wrong.3. I _____________ the pages of the test paper and smiled to myself because the questions seemed familiar to me.4. This old building could have been pulled down _________________some collectors choosing it to be their private storage.5. They ____________ what they were about to face at this great turning point in their career.6. Would you please _______ me ____________ Professor Johnson from the career planning office in the university.7. Bothered by the dilemma of his career, Mark ___________thought and didn’t hear the knock on the door.8. Cars, phones, jobs, products, lifestyles – at no other point in human history have there been such ______________ choices.