—How much of his speech did you think you understand?—_____ .I wish I had worked harder.
Betty will ring me up as soon as she ______ in Beijing.
The teacher requested that we ______ the classroom after using it.
The moment I met you, I ______ you though I hadn’t seen you for about ten years.
No one can imagine the difficulty he had ______ playing computer games.
You’d better ______ your scores and see if you have passed the exam.