--- How long ____ in Beijing? --- For just the weekend. I’ll be back for work next Monday morning.
| A．have you stayed | B．are you staying | C．did you stay | D．do you stay |
This disaster ______ that people had no knowledge of first aid and they hadn’t known how to protect them-selves in face of danger.
| A．led to | B．contributed to | C．resulted in | D．lay in |
The train had left, so we could do nothing but ________ another.
| A．wait | B．to wait | C．waited | D．waiting |
_________ computer games, his parents were very worried about his study.
| A．Addicted to | B．He addicted to | C．His addicting to | D．Addicting to |
. So seriously _____ in the accident that he was sent to hospital at once.
| A．he was wounded | B．was he hurt | C．he did injure | D．did he hurt |
Though he had tried to climb to the top of the mountain several times, he didn't__________________.
| A．get it | B．make it | C．arrive it | D． do it |