140MrZhang is such a considerate person ______ all his colleagues like to work with

Steven ________ since he got out of work three weeks ago.[ ]

Was the class long enough?—–No, _______ enough

They had their bad times but on the whole they were ______ happy [ ]

─Are there any birds in the zoo─ Yes. I often go there because I like to hear the birds _______.