You will fail the exam ________ you work hard.
| A．unless | B．once | C．since | D．after |
I’m sorry you’ve missed the train. It ______10 minutes ago.
| A．left | B．has left |
| C．had left | D．will leave |
Although the old man lives ______ , he doesn’t feel ______ .
| A．lonely , alone | B．alone, lonely |
| C．lonely, lonely | D．alone, alone |
Mrs. He teaches ______ Maths. We are all interested in ______ lessons.
| A．our…she | B．our…her | C．us…she | D．us…her |
Don’t give up working hard, ______ you will never achieve anything in your life.
| A．so | B．or | C．because | D．after |
______important advice my teacher has given me!
| A．How | B．How a | C．What | D．What a |