Teachers recommend parents their children under 12 to ride bicycles to school for safety.
| A．not allow | B．do not allow |
| C．mustn’t allow | D．couldn’t allow |
If you are _______ about Australian cities, just read the book written by Dr. Johnson.
| A．interested | B．anxious | C．upset | D．curious |
----Where can we get your latest children’s story?
----Soon. It _______ and will come out next week.
| A．has printed | B．is being printed | C．has been printed | D．has been printing |
More highways have been built in China, _____ it much easier for people to travel from one place to another.
| A．making | B．made | C．to make | D．having made |
A great idea suddenly _______ to me that I might use the pocket money to buy a tie for my father’s birthday.
| A．passed | B．happened | C．struck | D．occurred |
Ashes from the fire fall on the ice surface and _______ more radiation from the sun.
| A．take in | B．bring in | C．put in | D．go in |