All the children on the playground stared up into the sky until the noise of the plane ____.
| A．gave up | B．took off |
| C．went out | D．died away |
I heard the clock _________eight when I woke up this morning.
| A．beating | B．striking | C．hitting | D．knocking |
Imagine what today’s life would be like if Alexander Bell _____ the telephone more than 130 years ago!
| A．didn’t invent | B．wouldn’t invent |
| C．hadn’t invented | D．wouldn’t have invented |
A study has proven old people who are ______eaters of fish during their youth lose fewer brain cells.
| A．regular | B．common | C．special | D．proper |
Miss Li ___ as a secretary for five years in the company, and now she is general manager of it.
| A．has served | B．had served | C．served | D．serves |
We’ll have to race the clock to complete the work on time.
| A．beyond | B．over | C．against | D．from |