Is this the reason _______she explained in the report for her success in the job

Han expensive flat. —________ He even couldn’t have enough money to pay for the rent.

Where is Lu Wenjie? —I have no idea．He__________ be in the library.

It’s time _____ lunch.—OK. Let’s _____.

I haven’t got the reference book yet, but I’ll have a test on the subject next month.—Don’t worry. You______ have it by Friday.[ ]