_______ many times, but he still couldn’t understand it.
| A．Having been told | B．Though he had been told |
| C．He had been told | D．Having told |
He had no choice but________till his mother came back.
| A．waited | B．waiting | C．to wait | D．wait |
Mark woke up one morning to find both water and electricity________because of not being able to pay the bills.
| A．cut out | B．cut down | C．cut off | D．cut short |
There’re 103 elements found in nature, ________are metals.
| A．most of which | B．most of them | C．most of that | D．most which |
．I ________Mary in the park yesterday; we________each other since I left the college.
| A．met ; didn’t see | B．had met; hadn’t seen |
| C．met; hasn’t seen | D．met ; hadn’t seen |
________Journalism seems like a good profession（职业），I would prefer to be a teacher.
| A．Although | B．Even | C．No matter | D．Now that |