All school buses in the northwestern provinces with satellite positioning devices next year.
| A．fitted | B．will be fitted | C．have been fitted | D．are fitted |
After working for two hours, I foundimpossible to complete the paper in time.
| A．me | B．this | C．that | D．it |
Although ________ to stop, he kept on working
| A．tell | B．telling | C．having told | D．told |
Was_______ John’s quick action and knowledge of first aid ________ saved her life?
| A．it, which | B．that, what | C．it, that | D．it,/ |
Only after you have reached eighteen _______ the army.
| A．you can join | B．can you join |
| C．you can join in | D．can you join in |
The meeting is beginning at 8 o’clock. _____, let’s make some preparations for it.
| A．When | B．Meanwhile | C．While | D．During |