Mothers holding jobs outside the home should have ___ schedules to make it easier to care for their children.
| A．heavy |
| B．smooth |
| C．flexible |
| D．complex |
The condition prevents the blood from freely.
| A．circulating | B．spreading |
| C．flowing | D．circling |
— You have spoken to your mother in a rude manner.
— I admit I was wrong, but she read my diary without my permission.
| A．shouldn’t | B．mustn’t |
| C．needn’t | D．won’t |
They met with a lot of difficulties in building the railway in Tibet, but they _____until it was completed.
| A．carried on | B．put on |
| C．carried out | D．put out |
When we were young, we tried to spend our time all kinds of games in the fields.
| A．to play | B．playing |
| C．on playing | D．played |
Fortunately, Tony jumped back to prevent himself from being hit by the taxi, which was running at a great speed.
| A．in turn | B．in return |
| C．in time | D．in relief |