______ the first to use nuclear weapons.
| A．At no time China will be |
| B．Never China will be |
| C．Will China never be |
| D．At no time will China be |
Passengers are permittedonly one piece of hand luggage onto the plane.
| A．to carry | B．carrying | C．to be carried | D．being carried |
Helping others is a habit,you can learn even at an early age.
| A．it | B．that | C．what | D．one |
The country has already sent up three unmanned spacecraft , the most recentat the end of last March.
| A．has been launched | B．having been launched |
| C．being launched | D．to be launched |
He knew the files could be of help to took over the job.
| A．anyone | B．someone | C．whoever | D．who |
The traffic rule says young children under the age of four and less than 40 pounds must be in a child safety seat.
| A．being weighed | B．to weigh | C．weighed | D．weighing |