It was back home after experiment.
| A．not until midnight did he go | B．until midnight that he didn’t go |
| C．not until midnight that he went | D．until midnight when he didn’t |
________ you need something, please don't hesitate to let me know.
| A．Even though | B．In case |
| C．As though | D．Even if |
One more week, ________ we will accomplish the task better.
| A．or | B．but | C．unless | D．and |
He never thought that his success came ________ he least wanted it.
| A．until | B．since | C．when | D．while |
I was completely terrified when I suddenly saw a dark figure leaning ________ the door in front of me.
| A．in | B．to | C．against | D．by |
The sixyearold girl infected with the H7N9 bird flu is in a ________ condition after receiving treatment.
| A．stable | B．temporary |
| C．thoughtless | D．sensitive |