Was it in 2013, when he was still at a middle school, ________ this boy became an expert at the computer?
| A．which | B．when | C．where | D．that |
___ is an engineer.
| A．Li Pin’s and Li Hua’s father | B．Li Pin and Li Hua’s father |
| C．Li Pin’s and Li Hua father | D．Li pin and Li Hua father |
My trousers are too old.I’ll have to buy ____.
| A．a new pair | B．a new one | C．a pair of | D．some new pair |
Most of the wood ___ to make furniture.
| A．is used | B．are used | C．is used | D．are using |
All that can be done ____.
| A．has been done | B．have been done | C．have done | D．has done |
All of them ___ interested in geography.
A. are Bis C. show D.shows