The mother waved to her daughter until the train .
| A．out of sight | B．got out of sight |
| C．caught sight | D．lost sight |
Teachers suggested parents their children under 12 to ride bicycles to school for safety.
| A．shouldn’t allow | B．don’t allow | C．mustn’t allow | D．couldn’t allow |
But for their help, we the program in time.
| A．can not finish | B．will not finish |
| C．had not finish | D．could not have finished |
In our class, the student leaders are on duty every few days.
| A．the; a | B．/; a | C．/; / | D．The; / |
by a policeman, the children crossed the street safely.
| A．To lead | B．Lead | C．Leading | D．Led |
snacks and drinks, but they also brought cards for entertainment when they had a picnic in the forest.
| A．Not only they brought | B．Not only did they bring |
| C．Not only brought they | D．Not only they did bring |